Do Now: 1.Which topics to be covered on your test tomorrow do you feel comfortable with? 2.Which topics do you think you need to study the most?

Ms. Timson’s Physics Review to Conquer Kinematics

Rules of the Game There will be tribes, as divided by the teacher For each problem which appears on the slide, the tribe will be able to work together to vote on one answer given only the time which will be written on the slide. Tribes cast their answer using their voting cards only in the time allowed. Each team with a correct answer is allowed to cast one vote to remove another tribe from the island. The teacher will have each tribe cast their vote simultaneously by writing the color of the tribe they are voting for on their white board. The teacher will then remove tribes from the island. The teacher will track which tribes are in and which tribes are out of the game with signs on the board. If a tribe is voted out, they can reenter the game by answering the next question correctly to reenter. They will NOT receive a vote for that question but must wait until the next question. Winning tribes will be those still on the island at the end of the game. ***The teacher will be the final judge of any conflicts or confusions – and remember, be respectful and be honest!

1. A dog walks 15 m North, 15 m East, and 15 m South. What is his distance and displacement? a.distance=15 m, displacement=0m b.distance=45 m, displacement=15m W c.distance=45 m, displacement= 15m E d.distance=15 m, displacement=30m 30 seconds

2. The acceleration due to gravity is approximately: A. 9.8 B. 9.8 m/s 2 C m/s 2 D m/s 2 if up is positive 10 seconds

3. An airplane starts from rest and accelerates at a constant 3.00 m/sec 2 for 30.0 seconds before leaving the ground at the end of the runway. What kinematics variables are defined in this problem? A. a, v, d B. a, v, t C. a, t, v i D. a, v f 30 seconds

4. An indy-500 race car’s velocity increases from 4 m/s to 36 m/s over an interval lasting 4 s. What is the car’s average acceleration? A. 9 m/s 2 B. 1 m/s 2 C. 4 m/s 2 D. 8 m/s 2 1 minute

5. An indy-500 race car’s velocity increases from 4 m/s to 36 m/s over an interval lasting 4 s. What is the car’s displacement? A. 80 m B. 40 m C. 20 m D. 120 m 1.5 minutes

6. What is the speed of a rocket that travels 9000 meters in 12 seconds? A m/s B. 750 m/s C m/s D. None of the above 45 seconds

7. If a Ferrari, with an initial velocity of 10 m/s, accelerates at a rate of 50 m/s 2 for 3 seconds, what will its final velocity be? A. 150 m/s B. 180 m/s C. 140 m/s D. 160 m/s 1.5 minutes

8. Three balls (1 kg, 5 kg, & 10 kg) are dropped from a cliff. Which one lands first? a)1 kg b)5 kg c)10 kg d)all 3 land at once 30 seconds

9. The slope of a velocity –time graph is equal to: A. The distance B. The position C. The acceleration D. The velocity 20 seconds

10. The slope of a position–time graph is equal to: A. The distance B. The position C. The acceleration D. The velocity 20 seconds

11. In projectile motion: a)both horizontal & vertical velocities vary b)both horizontal & vertical velocities are constant c)the horizontal velocity varies while the vertical remains constant d)the vertical velocity varies while the horizontal remains constant 45 seconds

12. An acceleration directed towards the center of a circular path of motion is the _____ acceleration. a)centrifugal b)centripetal c)curvilinear d)inertial 20 seconds

13. If centripetal acceleration STOPS acting on a body in uniform circular motion, the body will move at _____ speed along a _____ path. a)constant … straight line b)varying … circular c)accelerated … straight line d)constant … circular 45 seconds

14. The formula for momentum is: a)mgh b) mv c) mv2 d)1/2 mv 2 10 seconds

15. A merry-go-round with radius 5 m turns once every 10 seconds. If a boy sits on the edge of the merry-go-round, what it his centripetal acceleration? (a)2 m/s 2 (b)3 m/s 2 (c)3 m/s (d) 0.5 m/s s 2 minutes

16. When an object is thrown straight up, its acceleration at the top of its rise (assume up is positive) is _____ m/s 2. a)0 b)4.9 c)9.8 d) seconds

17. Speed is the magnitude of _____. a)acceleration b) speed c) time d) velocity 20 seconds

18. The rate of change of velocity is: a)acceleration b) displacement c) speed d) Velocity 20 seconds

19. Which is a vector quantity? A)displacement b) distance c) mass d) speed 20 seconds

20. The _____ is a measure of change in position (only) in a particular direction. a)acceleration b)Displacement c)distance d)speed 20 seconds

21. A student walks to school 3 blocks away and then returns home for lunch. After lunch he returns to school. His displacement as described here is ____ A)0 blocks B) 3 blocks C) 6 blocks D) 9 blocks 30 seconds

22. A feather is dropped on the moon from a height of 1.4 meters. The acceleration of gravity on the moon is 1.67 m/s 2. Determine the time for the feather to fall to the surface of the moon. A..915 s B s C s D s 1.5 minutes

23. A projectile is fired vertically with an initial velocity of 98.0 m/s. How many seconds after firing does the projectile return to the ground? A)5 s B) 9.8 s C) 10.0 s D) 20 s E) 40 s 1.5 minutes

24. A projectile is fired vertically with an initial velocity of 98.0 m/s. How high does the projectile rise? A)122.5 m B) 490 m C) 980 m D) 1960 m E) 3920 m 1.5 minutes

Congratulations! Good luck tomorrow! I know you can conquer your test