# Motion Calculations (Grade 8)

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## Motion Calculations

1.

What is the speed of a car that travels 200 meters in 25 seconds?

- 5000 m/s
- 8 m/s
- 0.8 m/s
- 0.125 m/s

2.

What is the momentum of a 30-gram ball whose velocity is 5 m/s south?

- 150 g-m/s south
- 6 g-m/s south
- 1.6 g-m/s south
- 300 g-m/s south

3.

A bicycle accelerates from rest to 7 m/s in 14 seconds, how much is the bicycle's acceleration?

- 98 m/s/s
- 2 m/s/s
- 0.5 m/s/s
- 1.5 m/s/s

4.

What is the momentum of a 57-kg cheetah running north at 27 m/s?

- 1,539 kg-m/s north
- 999 kg-m/s north
- 2.1 kg-m/s north
- 0.47 kg-m/s north

5.

A car accelerates from 15 m/s to 30 m/s in 3.0 s. What is the car's acceleration?

- 10 m/s/s
- 25 m/s/s
- 15 m/s/s
- 5.0 m/s/s

6.

If you speed up from rest to 12 m/s in 3 seconds, what is your acceleration?

- 4 m
- 4 m/s/s
- 36 m
- 36 m/s

7.

You travel to a city 200 km away in 2.5 hours. What is your average speed in km/hr?

- 180 km/hr
- 12.5 km/hr
- 80 km/hr
- 0.0125 km/hr

8.

Write the equation and solve (use correct units):

Calculate the speed of a swimmer who swims 150 meters in 88 seconds.

Calculate the speed of a swimmer who swims 150 meters in 88 seconds.

9.

Write the formula (Use the correct units)

What is the momentum of a 16-kg bicycle traveling north at 3 m/s?

What is the momentum of a 16-kg bicycle traveling north at 3 m/s?

10.

Write the equation (use the correct units)

Find the acceleration of an automobile whose speed increases from 10 m/s to 22 m/s in 8 seconds.

Find the acceleration of an automobile whose speed increases from 10 m/s to 22 m/s in 8 seconds.

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