- 1. Which object has the most potential energy?
A) Mr. Mansour falling from the 4ft. desk
B) Mr. Mansour standing on an 8 ft. ladder
C) Mr. Mansour falling from an 8ft. ladder
D) Mr. Mansour standing on a 4 ft. desk
- 2. Bob is a boxer and hits his opponent with a knockout punch. His hand has a mass of 9.7 kg. He accelerates his hand at 4.5 meters per second. How much force did he hit his opponent with?
A) .46 N
B) 2.16 N
C) 43.65 N
D) 14.2 N
- 3. An object in motion stays in motion until acted on by another force.
A) Newtons 2nd law
B) Law of the conservation of energy
C) Newtons 3rd law
D) Newtons 1st law
- 4. For every action, there is an equal and opposite reaction.
A) Newtons 2nd law
B) Law of the conservation of energy
C) Newtons 1st law
D) Newtons 3rd law
- 5. Bill sprints a distance of 30 meters in 3 seconds. What is his velocity?
A) 90 m/s
B) 10 m/s
C) 3 m/s
D) 30 m/s
- 6. If we dropped a 300 pound woman and an 8 pound bowling ball from the same height in a vacuum, which would hit the ground first?
A) bowling ball
B) both hit at the same time
C) neither will hit the ground
D) woman
- 7. Which force slows down a basketball rolling along the ground the most?
A) friction
B) gravity
C) quarks
D) air resistance
- 8. In the real world, all objects always fall at the same rate?
A) False
B) True
- 9. Energy in motion is...
A) Static Energy
B) Thermal Energy
C) Kinetic Energy
D) Potential Energy
- 10. A force in a specific direction is called...
A) vector
B) filter
C) friction
D) gravity
- 11. If I wanted to stabilize my rocket so it didn't spin and do somersaults in the air, I would add these...
A) Fins
B) More weight
C) A nosecone
D) A fairing
- 12. Where is the best place to put fins on your water rocket to make it the most aerodynaic?
A) Bottom of rocket
B) Top of the rocket
C) Middle of rocket
- 13. Wind pulling on your rocket is called...
A) drag
B) newtons
C) gravity
D) loops
- 14. In a full paragraph (at least 5 sentences), describe what you have done to your rocket to make it fly as high as possible. Tell why you think it will or will not work well.
- 15. Explain why a car moving at 20 miles per hour has more force than a baseball traveling 90 miles per hour
- 16. Two hockey players are skating at each other. Player A has a mass of 978 newtons and skates 13 meters in 1.32 seconds. Player B has a mass of 945 newtons and skates 20 meters in 1.61 seconds. Who wins?
A) Player B by a lot (over 100 Newtons)
B) Player A by a lot (over 100 Newtons)
C) Player A by a little a little bit
D) Player B by a little
- 17. A bulldozer does 30,000 joules of work to push another boulder a distance of 20 meters. How much force is applied to push the boulder?
A) 600,000 Joules
B) 1500 Joules
C) 30,020 Joules
D) 600,000 Meters
E) 1500 Newtons
- 18. How much work does a mother do if she lifts each of her twin babies upward 1 meter? Each baby weighs 90 newtons. (Hint: There are two babies).
A) 180 Newtons
B) 90 Newtons
C) 90 Meters
D) 180 Joules
E) 90 Joules
- 19. A dad lifts his 100-newton child 2 meters onto his shoulders. He then walks up 4 meters of stairs. How much work is required to get the baby from the ground to the top of the stairs on the man's shoulders? (Hint: Think of the total distance).
A) 600 Joules
B) 200 Joules
C) 400 Joules
D) 16.7 Joules
E) 50 Joules
- 20. A high jumper with a force of 550 newtons does 1175 joules of work. How high did he jump off the ground? (Hint: think about how you measure height)
A) 2.14 meters
B) 2.14 feet
C) 2.14 joules
D) 646,250 meters
E) 646,250 newtons
- 21. A people-moving conveyor-belt moves a 600-newton person a distance of 100 meters through the airport. How much work was done?
A) 60 joules
B) 600 joules
C) 60,000 joules
D) .6 joules
E) 6 joules
- 22. A rocket has a pointed nosecone. This will help it...
A) Fly straighter
B) Reduce drag
C) Be more stable
D) Avoid obstacles
- 23. Which would have less drag?
A) A car with 2 inch tires
B) A bike with 1 inch tires
C) A car with 6 inch tires
D) A bike with 2.5 inch tires
E) A bike with .5 inch tires
- 24. Why do you add wings to your rocket?
- 25. What is the optimum level for water in our rocket testing?
A) 1/3
B) 1/5
C) 1/2
D) 1/4
- 26. A lightbulb does 136.7 joules of work over a time of 43.2 seconds. How much power was used?
A) 5905.44 Watts
B) 93.5 Watts
C) 3.16 Watts
D) .316 Watts
- 27. To find the acceleration you need to do:
A) Distance/Time
B) Velocity/Time
C) Mass/Time
D) Force/Time
- 28. Cindy has a mass of 130 kg and runs a distance of 40 meters in 6.2 seconds. How much work does she do? This is a multi step problem. Hint: Find the force first. Show the math problems for each step for full credit.
- 29. Bill runs into a building with a force of 125.2 newtons. If he as accelerating at a rate of 12 m/s2 what is his mass?
- 30. How much work does Sally do if she has a force of 26 N over a distance of 150 centimeters. Hint: Conversion required for this - two decimal places.
- 31. Diane hits a volleyball with her hand. Her hand has a mass of 1.7 kg. She accelerates her hand at a rate of 16.4 m/s/s to hit the ball. How much force did she hit the ball with?
- 32. Buddy has to push his car down the street because he ran out of gas. The car has a mass of 783 kg. He pushes the car 28 meters and it takes him 14 seconds to do this. How much force did he generate? (Hint: You must find the acceleration first, before you can get the force)?
- 33. Bob lifted a book 7 meters off the ground. The book required 8 newtons of force to lift. How much work did Bob do to lift the book?
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