One Dimensional Kinematics

1.

Multiple Choice

30 sec

1 pt

what is the speed of an object at rest?

0.0 m/s

1.0 m/s

9.81 m/s

-9.81 m/s²

2.

Multiple Choice

30 sec

1 pt

Acceleration is

displacement

the rate of change of displacement

velocity

the rate of change of velocity

3.

Multiple Select

30 sec

1 pt

Velocity is (select all that apply)

speed with a direction

a vector

rate of change of displacement

rate of change of acceleration

4.

Multiple Select

30 sec

1 pt

Displacement is (select all that apply)

how far an object is from where it started

how far an object has traveled

a scalar

a vector

5.

Multiple Select

30 sec

1 pt

distance is (select all that apply)

a scalar

how far an object moves is all of its travels

always positive

how far an object is from where it started

6.

Multiple Choice

5 mins

1 pt

A shopping cart given an initial velocity of 2.0 m/s undergoes a constant acceleration of 3.0 m/s². What is the magnitude of the cart's displacement after the first 4.0 s of its motion?

10.0 m

55 m

32 m

80.0 m

7.

Multiple Choice

5 mins

1 pt

A curious kitten pushes a ball of yarn at rest with its nose displacing the ball of yarn 15.4 cm in 3.00 s. What is the acceleration of the ball of yarn?

4.38 cm/s²

3.42 cm/s²

46.2 cm/s²

18.4 cm/s²

8.

Multiple Choice

5 mins

1 pt

A rock is thrown straight upward with an initial velocity of 24.5 m/s where the downward acceleration due to gravity is -9.81 m/s². What is the rock’s displacement after 1.00 s?

9.81 m

19.6 m

24.5 m

29.4 m

9.

Multiple Choice

5 mins

1 pt

Human reaction time is usually about 0.20 s. If your lab partner holds a ruler between your finger and thumb and releases it without warning, how far can you expect the ruler to fall before you catch it?

4.0 cm

9.8 cm

16.0 cm

19.6 cm

10.

Multiple Choice

2 mins

1 pt

A runner moves 40 m to the right and then 10 m to the left. What is the runner’s displacement after the two moves?

30 m to the right

40 m to the right

50 m

30 m

11.

Multiple Choice

30 sec

1 pt

What is the standard SI unit for acceleration?

m/s

m/s ²

m

s

12.

Multiple Choice

30 sec

1 pt

What is the standard SI unit for distance?

m/s

m/s ²

m

s

13.

Multiple Select

30 sec

1 pt

select all of the properties that are scalars

distance

time

temperature

speed

displacement

14.

Multiple Select

30 sec

1 pt

Select all of the properties that are vectors

acceleration

time

velocity

displacement

15.

Multiple Choice

30 sec

1 pt

a vector is a quantity with

magnitude and direction

magnitude or direction

magnitude only

direction only

16.

Multiple Choice

30 sec

1 pt

In one-dimensional motion, the average speed of an object that moves from one place to another and then back to its original place has which of the following properties?

It is positive.

It is negative.

It is zero.

It can be positive, negative, or zero.

It isn't zero

17.

Multiple Choice

30 sec

1 pt

A cheetah can run at approximately 100 km/hr and a gazelle at 80.0 km/hr. If both animals are running at full speed, with the gazelle 70.0 m ahead, how long before the cheetah catches its prey?

12.6 s

25.2 s

6.30 s

10.7 s

6.30 s d. 10.7 s e. 20.3 s

18.

Multiple Choice

30 sec

1 pt

An automobile driver puts on the brakes and decelerates from 30.0 m/s to zero in 10.0 s. What distance does the car travel?

150 m

196 m

336 m

392 m

421 m

19.

Multiple Choice

30 sec

1 pt

A rock, released at rest from the top of a tower, hits the ground after 1.5 s. What is the speed of the rock as it hits the ground? (g = 9.8 m/s² and air resistance is negligible)

15 m/s

20 m/s

31 m/s

39 m/s

40 m/s

20.

Multiple Choice

30 sec

1 pt

What is the displacement of an object at rest?

0 m

1 m

9.8 m

9.81 m

21.

Multiple Choice

30 sec

1 pt

A trucker drives with an average velocity of 27 m/s towards the east on a perfectly straight highway. What will the trucker's displacement be after 2 minutes?

97 m; east

190 m; east

1600 m; east

3200 m; east

22.

Multiple Choice

30 sec

1 pt

A race car accelerates from 0 m/s to 30 m/s with a 45 m displacement. What is the vehicle's acceleration?

2 m/s²

5 m/s²

10 m/s²

15 m/s²

23.

Multiple Choice

30 sec

1 pt

What is another name for free fall acceleration?

Displacement

Gravitational Acceleration

Instantaneous Acceleration

Negative Velocity

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