Acceleration - Assessment

1.

Multiple Choice

30 sec

1 pt

Acceleration is

the rate at which velocity changes.

the change in velocity

the rate of change

when you speed up only

2.

Multiple Select

30 sec

1 pt

In science, acceleration refers to

increasing speed

decreasing speed

changing direction

increasing speed only

3.

Multiple Choice

30 sec

1 pt

What does it mean when a change in velocity is negative?

The object is speeding up.

The object is slowing down.

The object is changing direction.

The object is falling down.

4.

Multiple Choice

1 min

1 pt

In each of the following cases, determine where the car has no acceleration ?

A car shortly after a stoplight turns green.

A car approaching a red light

A car with the cruise control set at 80 km/h

A car turning a curve at a constant speed

5.

Multiple Choice

30 sec

1 pt

Which of the following is a unit for acceleration?

km/s

m/s²

mi/hr

ft

6.

Multiple Select

30 sec

1 pt

If velocity is measured in meters/second and time is measured in seconds, the unit of acceleration is

m/s/s

m/s²

m/s

m

7.

Multiple Choice

30 sec

1 pt

If velocity is measured in kilometers/hour and time is measured in seconds, the unit of acceleration is

km/s/s

km/s²

km/h/s

km

8.

Multiple Choice

30 sec

1 pt

If velocity is measured in miles/hour and time is measured in seconds, the unit of acceleration is

mi/h/s

mi/s²

mi/h²

mi

9.

Multiple Select

30 sec

1 pt

While driving at an average velocity of 15.6 m/s down the road, a driver slams on the brakes to avoid hitting a squirrel. The car stops completely in 4.2 seconds. What is the average acceleration of the car?

What should your answer's final unit(s) for this problem be?

m/s/s

m/s²

m/s

m

10.

Multiple Choice

30 sec

1 pt

A sports car is advertised as being able to go from 0 to 60 mi/h in 6.00 seconds. What is the sports car’s average acceleration?

What should be your answer's final unit(s) be for this problem?

mi/h/s

m/s/s

m/s

mi/h

11.

Multiple Choice

30 sec

1 pt

If you are test-driving a Bugatti Veyron and you go from 0 km/s to 124 km/s in 3.7 seconds, what was your acceleration?

33.5 m/s²

0.03 m/s²

-33.5 m/s²

-0.03 m/s²

12.

Multiple Choice

30 sec

1 pt

A plane lands on the runway and slows from 758 km/hr to 30 km/hr in 0.013 hours. What is the plane's acceleration in m/s²?

56,000 m/s²

17857 m/s²

-17857 m/s²

-56,000 m/s²

13.

Multiple Choice

30 sec

1 pt

What is the final velocity of a rocket that travels for 4 seconds, has an initial velocity of 12 km/s and an acceleration of 2 km/s²?

-4 km/s

10 km/s

20 km/s

-10 km/s

14.

Multiple Choice

30 sec

12 pts

A golf ball accelerates off a tee at 15m/s², changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?

750 seconds

35 seconds

0.3 seconds

3.3 seconds

15.

Multiple Choice

30 sec

1 pt

The building with the highest occupiable floor is currently the Sears Tower in Chicago. The top floor of the Sears Tower is 110 stories (436 m) above street level, and the roof of the tower is 442 m above the street. Assume a golf ball is thrown downward from the roof of the Sears Tower. Neglecting air resistance, the golf ball accelerates at 9.8 m/s2 and lands on the pavement after 9.2 s. If the ball’s final speed is 93.0 m/s, what was the speed with which the ball was initially thrown?

3 m/s

12 m/s

19.9 m/s

34.2 m/s

16.

Multiple Choice

30 sec

1 pt

Which of the following is not accelerating?

a ball being juggled

a woman walking at 2.5 m/s along a

straight road

a satellite circling Earth

a braking cyclist

17.

Multiple Choice

30 sec

1 pt

The light turns red, and you ease to a halt. Checking your stopwatch, you see that you stopped in 4.5 seconds. Your acceleration was 1.23 x 10^–3 miles per second²in a direction opposite to your original velocity.

What was your original speed in miles per hour?

19.9 mi/h

34 mi/h

29 mi/h

39.0 mi/h

18.

Multiple Choice

30 sec

1 pt

True or False? If a car is slowing down it is accelerating.

True

False

19.

Multiple Choice

30 sec

1 pt

Falling objects drop with an average acceleration of 9.8 m/s2 . If an object falls from a tall building, how long will it take before it reaches a speed of 49 m/s?

5 s

480.2 s

0.2 s

58.8 s

20.

Multiple Choice

30 sec

1 pt

How long would it take Jesse with an acceleration of -2.50 m/s2 to bring his bicycle with an initial velocity of 13.5 m/s to a complete stop?

0.20 s

32.5 5

5.4 s

16 s

21.

Multiple Choice

30 sec

1 pt

The elevators in the Landmark Tower, in Yokohama, Japan are among the fastest in the world. They accelerate upward at 3.125 m/s2 for 4.0 s to reach their final speed. If these elevators start from rest, what is their final speed?

0.781 m/s

7.125 m/s

1.28 m/s

12.5 m/s

22.

Multiple Choice

30 sec

1 pt

Justine is ice-skating at the Lloyd Center. What is her final velocity if she accelerates at a rate of 2.0 m/s for 3.5 seconds?

1.5 m/s

5.5 m/s

7 m/s

1.75 m/s

23.

Multiple Choice

30 sec

1 pt

Kaya is riding her dirt bike eastward on a dirt road. She spots a pothole ahead. Kaya slows her car from 14.0 m/s to 5.5 m/s in 6.0 s. What is her acceleration?

-1.4 m/s²

+ 1.4 m/s²

0.7 m/s²

14.5 m/s²

24.

Multiple Choice

30 sec

1 pt

A car is speeding up in the same direction of motion so the acceleration is ---------

negative

positive

25.

Multiple Choice

1 min

1 pt

a car traveled from rest until it reached 100 m/s in 20 sec so the acceleration is ------m/s²

100

2000

5

50

26.

Multiple Choice

1 min

1 pt

An object moving at -5 m/s²is doing what?

Speeding up

Slowing down

Moving at the same speed

Stopped

27.

Multiple Choice

1 min

1 pt

A stopped car begins moving and reaches a speed of 25m/s in 5 seconds. What is its acceleration?

+25m/s²

-0m/s²

+5m/s²

5m/s

28.

Multiple Choice

5 mins

1 pt

What is velocity?

the quickness of an object

the location of an object

acceleration

speed in a specific direction

29.

Multiple Choice

15 mins

1 pt

Why does a car accelerate as it round a corner at a constant speed?

Its direction changes

It doesn't

It slows down

Its speeds up

30.

Multiple Choice

2 mins

1 pt

A drag racer accelerated from 0 m/s to 200 m/s in 5 s. What was the acceleration?

0 m/s

40 m/s²

-40 m/s²

40 m/s

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