Physics Quiz: Speed And Acceleration Practice Test!
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(2).jpg "Physics Quiz: Speed And Acceleration Practice Test!")
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- 1.A car goes from 30 miles per hour (mph) to 60 mph in six seconds. The acceleration of the car is:
- A.
5 mph per second.
- B.
6 mph per second.
- C.
30 mph per second.
- D.
180 mph per second.
- 2.
![The graph below represents the speed of a car vs. time.
Figure 4-1
Which point on the speed versus time graph in Figure 4-1 has the highest acceleration?
- ProProfs]( "The graph below represents the speed of a car vs. time.
Figure 4-1
Which point on the speed versus time graph in Figure 4-1 has the highest acceleration?")
The graph below represents the speed of a car vs. time. Figure 4-1 Which point on the speed versus time graph in Figure 4-1 has the highest acceleration?- A.
A
- B.
B
- C.
C
- D.
D
- 3.A rocket has an acceleration of 50 m/sec2. How long does it take the rocket to reach a speed of 1,000 m/sec?
- A.
.05 seconds
- B.
20 seconds
- C.
50 seconds
- D.
50,000 seconds
- 4.A sports car reaches a speed of 50 m/sec in 12 seconds after starting from rest. The acceleration of the car is:
- A.
0.24 m/sec^2
- B.
4.17 m/sec^2
- C.
38 m/sec^2
- D.
50 m/sec^2
- 5.
![The graph below represents the motion of an object.
Figure 4-2
Between two and three seconds, the speed of the object shown in Figure 4-2:
- ProProfs]( "The graph below represents the motion of an object.
Figure 4-2
Between two and three seconds, the speed of the object shown in Figure 4-2:")
The graph below represents the motion of an object. Figure 4-2 Between two and three seconds, the speed of the object shown in Figure 4-2:- A.
Is approximately 1.33 m/sec
- B.
Is approximately 3 m/sec
- C.
Increases from 1 m/sec to 4 m/sec
- D.
Increases from rest to 4 m/sec
- 6.Which of the following statements CANNOT ever be true?
- A.
An object can have a speed of zero and an acceleration that is not zero.
- B.
An object can have an acceleration of zero and a speed that is not zero.
- C.
An object can have a speed that is changing and still have zero acceleration.
- D.
An object can have a speed that is decreasing and still have acceleration.\x00
- 7.
![In the equation , the variable x0 represents:
- ProProfs]( "In the equation , the variable x0 represents:")
In the equation , the variable x0 represents:- A.
The position at time t = 0.
- B.
The distance moved in the first second of motion.
- C.
The speed at time t = 0.
- D.
The position when the speed (v) equals zero.
- 8.
![The graph below represents the motion of a moving object.
Figure 4-3
The initial speed (v0) shown in Figure 4-3 is:
- ProProfs]( "The graph below represents the motion of a moving object.
Figure 4-3
The initial speed (v0) shown in Figure 4-3 is:")
The graph below represents the motion of a moving object. Figure 4-3 The initial speed (v0) shown in Figure 4-3 is:- A.
0.0 m/sec.
- B.
0.2 m/sec.
- C.
0.4 m/sec.
- D.
2.0 m/sec.
- 9.A car is traveling at 30 m/sec in a straight line. The driver applies the brakes for 3 seconds, and the car slows down to 12 m/sec. The acceleration of the car is:
- A.
-3 m/sec^2
- B.
-4 m/sec^2
- C.
-6 m/sec^2
- D.
-10 m/sec^2
- 10.
![If the speed is constant, which variable is zero in the equation ? - ProProfs]( "If the speed is constant, which variable is zero in the equation ?")
If the speed is constant, which variable is zero in the equation ?- A.
X0
- B.
V0
- C.
A
- D.
T
- 11.An object falls for 2 seconds after being dropped from rest. Its speed is approximately:
- A.
2 m/sec
- B.
4.9 m/sec
- C.
9.8 m/sec
- D.
19.6 m/sec
- 12.A object is thrown straight upwards with a speed of 19.6 m/sec. Three seconds later, its speed is:
- A.
Zero
- B.
9.8 m/sec downward
- C.
49 m/sec upward
- D.
29.4 m/sec downward
- 13.The acceleration of gravity on the moon is about 1.6 m/sec2. A 2-kilogram object on the moon is dropped from rest. After ten seconds, the speed of the object is:
- A.
1.6 m/sec
- B.
3.2 m/sec
- C.
16 m/sec
- D.
32 m/sec
- 14.In physics, the term free fall means:
- A.
No forces act on the object except gravity.
- B.
The speed of a falling object remains constant.
- C.
The object is dropped from an initial speed of zero.
- D.
The object is dropped straight down.
- 15.The acceleration of gravity on the moon is about 1.6 m/sec2. An experiment to test gravity compares the time it takes objects to reach a speed of 10 m/sec after being dropped from rest. How long does an object dropped on the moon have to fall compared to an object dropped on Earth?
- A.
1.6 times as long
- B.
6.1 times as long
- C.
9.8 times as long
- D.
15.7 times as long
- 16.The acceleration of gravity expressed in English units is: a. 9.8 ft/min2. b. 32.2 ft/sec2. c. 9.8 ft/sec2. d. 3.0 ft/sec2.
- A.
9.8 ft/min^2
- B.
32.2 ft/sec^2
- C.
9.8 ft/sec^2
- D.
3.0 ft/sec^2
- 17.A clever person who knows physics measures the depth of a deep hole by dropping a rock into the hole. The rock takes 3.2 seconds to hit the bottom. The depth of the hole is approximately:
- A.
16 meters
- B.
31 meters
- C.
50 meters
- D.
100 meters
- 18.An arrow is shot straight up into the air at a speed of 98 m/sec. What is the maximum height reached by the arrow? You may neglect air friction.
- A.
98 meters
- B.
490 meters
- C.
980 meters
- D.
1,470 meters
- 19.A stone is dropped from the roof of a tall building. A person measures the speed of the stone to be 49 m/sec when it hits the ground. The height of the building is closest to:
- A.
24 meters
- B.
49 meters
- C.
122 meters
- D.
245 meters
- 20.A bolt falls off an airplane high above the ground. How far does the bolt have to fall before its speed reaches 100 m/sec (about 200 miles per hour)? You should ignore air friction in your calculation. (HINT: Calculate time, then calculate distance). You can work this on a piece of paper and turn it in with the test
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