Name: _____________________________________________ Date: _______________________ Period: ________ FOPS UNIT 3 – Newton’s Laws of Motion Review Worksheet 1. Why don’t heavy things fall faster than light things? 2. A force is required to get a ball rolling, or to stop it. Explain this. 3. Kg measures___________ 4. N measures____________ 5. M/s2 measures_____________ 6. What is speed? 7. To have velocity you must have _______________ and _______________. 8. Find the average speed of a cheetah that runs 100m in 4 seconds. 9. What is meant by net force? 10. Suppose you stand on a bathroom scale and you weigh 110N. If you stand on two scales at the same time what would they say? Explain. 11. Define acceleration using words and formulas. 12. Describe acceleration in relationship to force. 13. Describe how mass and inertia are related. FOPS Newton’s Laws of Motion Review 1 14. How does mass effect acceleration? 15. Why can I say that air resistance is a negative force? 16. What force always resists or opposes acceleration? 17. ∑ F=0 explain. 18. What unit is used for force?____________________________ 19. The force that holds you up is called the ________________________________. 20. What is velocity? ____________________________________________________________________________ 21. What is Inertia? ______________________________________________________________________________ 22. Tiffany is hanging from the rings of the swing set. If she weighs 150N what is the tension in chains? ____________________ combined. 23. I am pushing on a large box with 200N of force. Clint is pushing on the box with 200N of force in the opposite direction. Why wont the box move? (use the word equilibrium) 24. What do we mean when we say that motion is relative? 25. If a cannon is fired use a=F/m to explain what happens to the cannon and the cannonball. 26. Newton’s 3rd law of motion states that for every_________________________________________________ _______________________________________________________________________________________________ 27. When two forces act on one another it is called a(n) ________________________. 28. Jordan pushes with a force of 50N > on a crate. The friction forces are 100 N<. Will the crate move?________ What is the acceleration of the crate? _____________ 29. The acceleration due to gravity is _____________________. FOPS Newton’s Laws of Motion Review 2 30. Acceleration =∆v/∆t, in words this is said a change in ________________ per _______________. 31. As a motorcycle climbs a hill why does it undergo acceleration? 32. If the Fw force of w is 100N, then we know the force of n is _______________. Fn 33. If Katelyn pushes with a force of 125N and the crate does not move the friction force is__________. 34. A force of 204 N is applied to an 18 kg block. What is the acceleration of the block? 35. A 2 kg steel block is moved across table at 0.25 m/sec2. How much force caused the acceleration? 36. What force is needed to accelerate a 200 kg mass across a surface at 75.5 m/sec 2? 37. A force of 12.5 N is applied to a 10 kg mass. What is the acceleration of the mass? 38. If an object is moving with a force of 99N at 12.5m/sec2, what is the mass of this object? 39. What is the weight of a 55 kg mass? 40. What is the mass of a person whose weight is 110N? FOPS Newton’s Laws of Motion Review 3