# Physics Quiz: Speed And Acceleration Practice Test!

20 Questions | Total Attempts: 532  Settings  .

• 1.
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
• 2.
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.

• 3.
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

• 4.
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

• 5.
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

• 6.
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

• 7.
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

• 8.
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.

• 9.
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.

• 10.
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

• 11.
If the speed is constant, which variable is zero in the equation ?
• A.

X0

• B.

V0

• C.

A

• D.

T

• 12.
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

• 13.
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

• 14.
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

• 15.
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.

• 16.
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

• 17.
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

• 18.
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

• 19.
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

• 20.
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

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