# Remedial Fisika Kelas X

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UNTUK MEMBANTU SISWA DALAM PENCAPAIAN KKM

• 1.

### Tiga besaran di bawah ini yang termasuk dalam besaran skalar adalah ….

• A.

Jarak, waktu, luas

• B.

Percepatan, momentum, kecepatan

• C.

Gaya, waktu, induksi magnetic

• D.

Laju, percepatan, perpindahan

• E.

Perpindahan, kecepatan, percepatan

A. Jarak, waktu, luas
Explanation
The correct answer is "Jarak, waktu, luas" because scalar quantities are those that have only magnitude and no direction. Distance (jarak) and time (waktu) are scalar quantities as they can be measured without any reference to direction. Area (luas) is also a scalar quantity as it represents the size of a two-dimensional surface and does not have any direction associated with it.

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• 2.

### Setelah selang waktu 20 s kecepatan kereta berubah dari 10 m/s menjadi 20 m/s. percepatan rata-rata kereta adalah ….m/s2.

• A.

0,5

• B.

1

• C.

1,5

• D.

2

• E.

2,5

A. 0,5
Explanation
The average acceleration of the train can be calculated using the formula: average acceleration = (final velocity - initial velocity) / time. In this case, the initial velocity is 10 m/s, the final velocity is 20 m/s, and the time is 20 seconds. Plugging in these values into the formula, we get (20 m/s - 10 m/s) / 20 s = 10 m/s / 20 s = 0.5 m/s^2. Therefore, the correct answer is 0.5.

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• 3.

### Sepeda dipercepat dari keadaan diam sampai kelajuan 10 m/s sehingga jarak yang ditempuhnya adalah 40 m. Percepatan yang dialami sepeda adalah …m/s2.

• A.

1,25

• B.

1,35

• C.

1,45

• D.

1,55

• E.

1,65

A. 1,25
Explanation
The given information states that a bicycle accelerates from rest to a speed of 10 m/s and covers a distance of 40 m. To find the acceleration, we can use the equation of motion:

v^2 = u^2 + 2as

where v is the final velocity (10 m/s), u is the initial velocity (0 m/s), a is the acceleration, and s is the distance (40 m).

Plugging in the values, we get:

(10 m/s)^2 = (0 m/s)^2 + 2a(40 m)

100 m^2/s^2 = 0 + 80a

100 m^2/s^2 = 80a

Dividing both sides by 80, we find:

a = 100 m^2/s^2 / 80 = 1.25 m/s^2

Therefore, the acceleration experienced by the bicycle is 1.25 m/s^2.

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• 4.

### Sebuah kelapa lepas dari tangkai dan jatuh bebas dari ketinggian 20 m diatas tanah. Jika perceptan gravitasi ditempat tersebut adalah 10 m/s2, waktu yang dibutuhkan kelapa untuk sampai ke tanah adalah …s.

• A.

5

• B.

4

• C.

3

• D.

2

• E.

1

D. 2
Explanation
The time it takes for an object to fall freely from a certain height can be calculated using the equation t = √(2h/g), where t is the time, h is the height, and g is the acceleration due to gravity. In this case, the height is 20m and the acceleration due to gravity is 10m/s^2. Plugging these values into the equation, we get t = √(2(20)/10) = √(4) = 2 seconds. Therefore, it takes 2 seconds for the coconut to reach the ground.

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• 5.

### Satuan kecepatan dan percepatan dalam Sistem Internasional adalah …

• A.

Km/jam dan km/jam2

• B.

M/s2 dan m/s

• C.

M/s dan m2/s

• D.

M/s dan m/s2

• E.

Km/menit dan km/menit2

D. M/s dan m/s2
Explanation
The correct answer is m/s and m/s2. In the International System of Units (SI), the unit for velocity (speed) is meters per second (m/s) and the unit for acceleration is meters per second squared (m/s2). This means that velocity is measured in meters per second and acceleration is measured in meters per second squared.

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• 6.

### Richard berenang di kolam renang sepanjang 50 m dalam waktu 20 s. Ketika berenang kembali ke posisi awal Richard membutuhkan waktu 22 s. Besar perpindahan yang dialami Richard adalah …

• A.

100 m

• B.

0 m

• C.

20 m

• D.

120 m

• E.

50 m

B. 0 m
Explanation
The correct answer is 0 m. This is because the question states that Richard swam 50 m in one direction and then returned to his starting position. Therefore, his total displacement is 0 m, as he ended up back where he started.

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• 7.

### Purnomo berlari dengan kecepatan 9,4 m/s dan berada 2 m di belakang Mardi. Jika dibutuhkan waktu 10 s untuk menyusul Mardi, berapa kecepatan Purnomo?....m/s

• A.

8,6

• B.

8,8

• C.

9,0

• D.

9,2

• E.

9,6

C. 9,0
Explanation
Purnomo is running at a speed of 9.4 m/s and is 2 m behind Mardi. It takes him 10 seconds to catch up to Mardi. Therefore, to calculate Purnomo's speed, we can use the formula: speed = distance/time. Purnomo covers a distance of 2 m in 10 seconds to catch up to Mardi. So, his speed is 2/10 = 0.2 m/s. Therefore, Purnomo's speed is 9.4 m/s + 0.2 m/s = 9.0 m/s.

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• 8.

### Perhatikan tabel berikut !   No Besaran Alat Ukur Satuan 1 Massa Neraca lengan Kg 2 Suhu Thermometer C 3 Waktu Stopwatch s 4 Panjang Micrometer sekrup mm   Besaran pokok, alat ukur dan satuan dalam sistem internasional (SI) yang benar sesuai tabel ditunjukkan pada nomor….

• A.

3 dan 4

• B.

1 dan 2

• C.

2 dan 3

• D.

1 dan 3

• E.

2 dan 4

D. 1 dan 3
Explanation
The correct answer is 1 and 3 because the table shows that the correct combination of base quantity, measuring instrument, and unit in the International System of Units (SI) is for mass (kg) to be measured using a beam balance and for time (s) to be measured using a stopwatch.

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• 9.

### Mobil bergerak dengan kecepatan 20 m/s, kemudian karena ada rintangan sopir menginjak rem dengan perlambatan 5 m/s2. Waktu yang dibutuhkan mobil sampai berhenti adalah …s.

• A.

5

• B.

4

• C.

3

• D.

2

• E.

1

B. 4
Explanation
The time taken for the car to come to a stop can be calculated using the equation:
time = (final velocity - initial velocity) / acceleration.
In this case, the initial velocity is 20 m/s, the final velocity is 0 m/s (since the car comes to a stop), and the acceleration is -5 m/s^2 (negative because it is deceleration).
Plugging in these values, we get:
time = (0 - 20) / -5 = 4 seconds.
Therefore, the correct answer is 4.

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• 10.

### Komponen dari sebuah vektor yang besarnya 12 N dan membentuk sudut 30o terhadap sumbu horizontal adalah ….

• A.

Fx = -6√3 N dan Fy = 6 N

• B.

Fx = 6N dan Fy = 6√3 N

• C.

Fx = - 6N dan Fy = -6√3 N

• D.

Fx = 6√3 N dan Fy = 6 N

• E.

Fx = 6√3 N dan Fy = - 6 N

D. Fx = 6√3 N dan Fy = 6 N
Explanation
The given vektor has a magnitude of 12 N and forms a 30-degree angle with the horizontal axis. To find the x-component and y-component of the vector, we can use trigonometry. The x-component is found by multiplying the magnitude by the cosine of the angle, which gives us Fx = 12 N * cos(30°) = 6√3 N. The y-component is found by multiplying the magnitude by the sine of the angle, which gives us Fy = 12 N * sin(30°) = 6 N. Therefore, the correct answer is Fx = 6√3 N and Fy = 6 N.

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• 11.

### Kelompok besaran berikut yang termasuk kelompok besaran turunan adalah ….

• A.

Panjang, lebar, luas

• B.

Kecepatan, percepatan, gaya

• C.

Intensitas cahaya, jumlah zat, volume

• D.

Massa, waktu, percepatan

• E.

Kuat arus, suhu, usaha

B. Kecepatan, percepatan, gaya
Explanation
The given answer is correct because kecepatan (velocity), percepatan (acceleration), and gaya (force) are all examples of derived quantities. Derived quantities are those that are derived from the combination of base quantities, such as length, time, and mass. Kecepatan is derived by dividing distance by time, percepatan is derived by dividing change in velocity by time, and gaya is derived by multiplying mass and acceleration. Therefore, these three quantities belong to the group of derived quantities.

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• 12.

### Jika diketahui resultan dua buah vektor yang saling tagak lurus adalah 10 N, dan besar salah satu vektornya 6 N, maka besar vektor yang lain adalah ….N

• A.

2

• B.

3

• C.

4

• D.

6

• E.

8

E. 8
Explanation
Given that the resultant of two perpendicular vectors is 10 N and one of the vectors is 6 N, we can use the Pythagorean theorem to find the magnitude of the other vector. The Pythagorean theorem states that the square of the hypotenuse (resultant) is equal to the sum of the squares of the other two sides (vectors). So, using this theorem, we can calculate the magnitude of the other vector as follows: 10^2 = 6^2 + x^2, where x is the magnitude of the other vector. Solving this equation, we get x^2 = 100 - 36 = 64. Taking the square root of both sides, we find that x = 8 N. Therefore, the magnitude of the other vector is 8 N.

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• 13.

### Hasil pengukuran panjang dan lebar sebidang tanah berbentuk persegi panjang adalah 15,35 m dan 12,5 m. Luas tanah menurut aturan angka penting adalah ….m2

• A.

191,87

• B.

191,88

• C.

191,875

• D.

191,89

• E.

192

E. 192
Explanation
The length and width of the rectangular land are given as 15.35 m and 12.5 m respectively. To find the area of the land, we multiply the length and width. When we multiply 15.35 m and 12.5 m, we get 191.875 m2. According to the rules of significant figures, we round this value to the nearest whole number, which is 192. Therefore, the correct answer is 192.

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• 14.

### Dua buah vektor yang saling tegak lurus, masing-masing besarnya 4 N dan 3 N. resultan kedua vektor tersebut adalah ….N

• A.

1

• B.

2

• C.

3

• D.

4

• E.

5

E. 5
Explanation
The resultant of two perpendicular vectors can be found using the Pythagorean theorem. The magnitude of the resultant vector is given by the square root of the sum of the squares of the individual vector magnitudes. In this case, the magnitude of the first vector is 4 N and the magnitude of the second vector is 3 N. Using the Pythagorean theorem, the magnitude of the resultant vector is √(4^2 + 3^2) = √(16 + 9) = √25 = 5 N.

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• 15.

### Dua buah gaya bernilai 4 N dan 6 N dengan arah berlawanan pada satu garis lurus. Resultan kedua gaya adalah ….

• A.

2 N kearah sudut 60o

• B.

10 N kearah gaya 4 N

• C.

10 N kearah gaya 6 N

• D.

2 N kearah gaya 4 N

• E.

2 N kearah gaya 6 N

E. 2 N kearah gaya 6 N
Explanation
The correct answer is 2 N kearah gaya 6 N. This means that the resultant of the two forces is 2 N in the direction of the 6 N force. The two forces have opposite directions, so they will cancel each other out to some extent. The resultant force will be in the direction of the larger force, which is 6 N. The magnitude of the resultant force can be found by subtracting the smaller force from the larger force, which gives us 6 N - 4 N = 2 N. Therefore, the resultant of the two forces is 2 N in the direction of the 6 N force.

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• 16.

### Diantara kelompok besaran berikut, yang termasuk kelompok besaran pokok dalam sistem internasional adalah …

• A.

Intensitas cahaya, kecepatan, percepatan, waktu

• B.

Volume, suhu, massa, kuat arus

• C.

Kuat arus, intensitas cahaya, suhu, waktu

• D.

Panjang, luas, waktu, jumlah zat

• E.

Kuat arus, panjang, massa, tekanan

C. Kuat arus, intensitas cahaya, suhu, waktu
Explanation
The correct answer is "Kuat arus, intensitas cahaya, suhu, waktu". This is because these four quantities (electric current, light intensity, temperature, and time) are considered fundamental or base quantities in the International System of Units (SI). Base quantities are independent and cannot be defined in terms of other quantities. They form the foundation for deriving other quantities in the SI system.

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• 17.

### Diantara gerak berikut manakah yang dianggap sebagai gerak lurus dipercepat ?

• A.

Meteorit jatuh ke bumi

• B.

Kereta bergerak di atas rel

• C.

Mobil bergerak di lintasan balap

• D.

Mobil melaju di jalan raya

• E.

Perahu meluncur di atas air

A. Meteorit jatuh ke bumi
Explanation
The correct answer is "Meteorit jatuh ke bumi." This is considered as accelerated linear motion because the meteorite is falling towards the Earth due to the force of gravity. As it falls, its speed increases, indicating acceleration.

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• 18.

### Diantara gerak berikut manakah yang dianggap sebagai gerak lurus diperlambat?

• A.

Meteorit jatuh ke bumi

• B.

Batu dilempar ke atas

• C.

• D.

Terjun bebas

• E.

Batu dilempar ke bawah

B. Batu dilempar ke atas
Explanation
Batu dilempar ke atas dianggap sebagai gerak lurus diperlambat karena ketika batu dilempar ke atas, gaya gravitasi menarik batu ke bawah sehingga melambatkan kecepatan batu tersebut.

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• 19.

### Dari hasil pengukuran di bawah ini yang termasuk besaran vektor adalah….

• A.

Gaya, daya, usaha

• B.

Gaya, berat, massa

• C.

Perpindahan, laju, kecepatan

• D.

Kecepatan, perpindahan, percepatan

• E.

Percepatan, kecepatan, daya

D. Kecepatan, perpindahan, percepatan
Explanation
The correct answer is "Kecepatan, perpindahan, percepatan." Kecepatan, perpindahan, and percepatan are all vector quantities because they have both magnitude and direction. Kecepatan (velocity) is the rate of change of displacement with respect to time, perpindahan (displacement) is the change in position of an object, and percepatan (acceleration) is the rate of change of velocity with respect to time. These quantities require both a numerical value and a direction to fully describe them, making them vector quantities.

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• 20.

### Andi berangkat ke sekolah pukul 07.00. Jika jarak rumah Andi ke sekolah 10 km dan kelajuan motor Andi 40 km/jam. Pukul berapa Andi tiba di sekolah…..

• A.

07.05

• B.

07.10

• C.

07.15

• D.

07.20

• E.

07.25

C. 07.15
Explanation
Andi berangkat pukul 07.00 dan memiliki jarak 10 km untuk mencapai sekolah. Dalam satu jam, motor Andi dapat menempuh jarak 40 km. Oleh karena itu, Andi akan tiba di sekolah setelah 15 menit (10 km / 40 km/jam * 60 menit). Jadi, Andi akan tiba di sekolah pukul 07.15.

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• Current Version
• Mar 22, 2023
Quiz Edited by
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• Dec 29, 2011
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