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Name__________________________
Miss Fry
PHYSICS REVIEW SHEET
Projectiles, vectors, and FORces!
1. A vector quantity tells you both ______________ and _______________?
2. What is a projectile?
3. Be able to do ONE or TWO projectile problems, such as “A rock is dropped off a
cliff…it lands 47 feet away from the bottom of the cliff. How high is the cliff?”
4. What is the Pythagorean theorem?
5. What is the Law of Cosines?
6. Example Problem: A plane flying due north at 100 m/s is blown towards due west at 50
m/s by a strong wind. Find the plane’s resultant velocity and direction.
7. Example Problem: In tackling a running back from an opposing team, a defensive
lineman exerts a force of 500 N (newtons, not north) north, while a linebacker
Name__________________________
Miss Fry
simultaneously applies a force of 650 N west. What is the resultant force on the ball
carrier?
8. Example Problem: A car is driving east for 70 km when it makes a 53 degree turn to the
left and goes another 17 km. What is the displacement for this car?
9. What is force?
10. What are Newton’s 3 Laws?
11. What is inertia?
12. Be able to use Newton’s 2nd law to do various calculations.
13. Be able to convert weights in kilograms to Newtons. Ex: How much force is applied on
the floor by a person who weighs 120 kg?
14. Forces are measured in what?
15. What is a net force?
16. If two equal forces act on an object in the same direction, what is the net force? Unequal
forces? If two equal forces act on the object in opposite directions, what happens to the
net force? Unequal forces?
17. Be able to do a force diagram for a given example.
18. If I drop a penny off the Sears Tower, the penny drops to earth. Does the earth move
towards the penny? Explain.
19. What is friction?
20. What can we use to reduce friction?
21. Why do we need some amount of friction in the world?
22. Air resistance is a very common form of ________________________.
23. What is periodic motion?
24. What is equilibrium?
25. What is the amplitude?
26. What is the equation for the period of a pendulum?
27. Does the period depend at all on the mass of the bob or the amplitude?
28. What happened at the Tacoma Narrows bridge?
Remember to write down all work you do on your problems for partial credit. If you happen
to punch it in to your calculator incorrectly, I can then give you partial credit for at least
setting up the problem correctly.