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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