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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?
  1. 5000 m/s
  2. 8 m/s
  3. 0.8 m/s
  4. 0.125 m/s
 
2. 
What is the momentum of a 30 gram ball whose velocity is 5 m/s south?
  1. 150 g-m/s south
  2. 6 g-m/s south
  3. 1.6 g-m/s south
  4. 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?
  1. 98 m/s/s
  2. 2 m/s/s
  3. 0.5 m/s/s
  4. 1.5 m/s/s
 
4. 
What is the momentum of a 57 kg cheetah running north at 27 m/s?
  1. 1,539 kg-m/s north
  2. 999 kg-m/s north
  3. 2.1 kg-m/s north
  4. 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?
  1. 10 m/s/s
  2. 25 m/s/s
  3. 15 m/s/s
  4. 5.0 m/s/s
 
6. 
If you speed up from rest to 12 m/s in 3 seconds, what is your acceleration?
  1. 4 m
  2. 4 m/s/s
  3. 36 m
  4. 36 m/s
7. 
You travel to a city 200 km away in 2.5 hours. What is your average speed in km/hr?
  1. 180 km/hr
  2. 12.5 km/hr
  3. 80 km/hr
  4. 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.



9. 
Write the formula (Use the correct units)
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.



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