Velocity and Acceleration Calculation Worksheet



Forces Worksheet #1 –

Calculating Force, distance, and velocity

General knowledge

1. Define force.

A push or a pull

2. What are four fundamental forces?

gravity, electromagnetism, strong nuclear, weak nuclear.

Review: calculating distance using speed and time

3. What is the formula for calculating distance, if you know the speed and the time?

Distance=___v*t____________

4. A car is moving at a speed of 40 mi/hour. After 3 hours, how far has the car travelled?

40m/hr * 3hr = 120 mi.

5. A dog is running at a speed of 5m/s. After 5 seconds, how far has the dog travelled?

5m/s*5s = 25m

Review: calculating displacement using velocity and time

6. What is the formula for calculating displacement, if you know the velocity and the time?

Displacement=v*t

7. A girl walks to her friend’s house at a velocity of 15m/min. She reaches her friend’s house after 15 minutes. How far has she walked?

15m/min*15min = 225m

8. The same girl walks back home at the same rate, but stops at a store after 10 minutes. When she reaches the store, how far is she from home?

-15m/min*10min = -150m

225m-150m=75m. she is 75m from home

Review: calculating velocity using acceleration and time

9. What is the formula for calculating velocity, if you know the acceleration and the time? V=a*t

10. You run across a field, accelerating at a rate of 2m/s2. After 3 seconds, how fast are you running?

2m/s2* 3 seconds = 6m/s

11. After you have been running at the velocity you calculated in #10, you slow down, at an acceleration of -3m/s2. After 2 seconds, what is your velocity?

-3m/s2 * 2 = -3m/s

12. What is the acceleration of gravity? 9.8m/s2

13. A rock with a mass of 0.25kg drops from a window. After 3 seconds, what is its velocity?

9.8m/s2*3s =29.4m/s

14. A person with a mass of 25 kg drops from a window. After 3 seconds, what is his velocity?

9.8m/s2*3s =29.4m/s

New: calculating force using acceleration

15. What is the formula for calculating force? F=m*a

16. The rock in #13 falls for 5 seconds, and then hits the ground. What is the force of its impact?

0.25kg*9.8m/s2=2.45N

17. The person in #14 falls for 5 seconds, and then hits the ground. What is the force of his/her impact?

25kg*9.8m/s2=245N

18. You are a linebacker trying to sack the quarterback. You accelerate towards this hapless person at a rate of 5m/s2, and your mass is 100kg. Assuming that you sack him, with what force do you hit the quarterback?

5m/s2* 100kg = 500N

19. A linebacker from the opposing team is trying to block you. With what force will he have to push you, in order to stop you?

-500N

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