Physics Review For Final. 1. For the following 6 graphs state whether they show Uniform Velocity, Acceleration, Deceleration

Transcription

1 Physics Review For Final NAME 1. For the following 6 graphs state whether they show Uniform Velocity, Acceleration, Deceleration

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3 2. Draw 2 ticker tapes. One showing uniform acceleration, and one showing uniform velocity. 3. For the following graph. Velocity vs Time A. Calculate the distance traveled from 20 to 50s. B. Describe the motion at point A, B, and C.

4 4. For the following graph: Distance vs time A. Calculate the velocity from 0 to 7 min. B. What is the velocity from 7 to 11 min C. Calculate the velocity from 11 to 15 min.

5 5. For the following values plot a distance vs time graph, calculate slope, what does it represent? Distance m Time s

6 6. A car is moving at 13.5 m/s and accelerates 5.60 m/s to a velocity of 38.2m/s. How long does it take to achieve this. 7. Steven Seagal is doing a stunt for his upcoming movie. He has 22 seconds to drive a car from rest to the speed of 140 km/h. What must his acceleration be? 8. Describe what you need in order to do work. 9. If a bike is ridden for 28 min with an average velocity of 14 km/h. How fare did the biker travel in meters? 10. Derive the units for Joules. HINT (Use the formula for Work to figure this out.)

7 11. A 16 N box is lifted 5.0m into the air. How much work is done? 12. A 1200kg car is going 30 km/h when the light turns red. It stops in 5 s. How much force do the brakes have on them to stop the car. 13. A force is applied over the distance of 4.0m. If 10.0 J of work is done. The size of the force is? 14. If a snowmobile weighs 220 kg and has 1000J of kinetic energy, how fast is it going? 15. What is the change in potential energy if a 3.0 kg book is lifted 2.0 m?

8 16. If a hammer is dropped on a nail, When is the gravitational potential energy highest? When is kinetic energy highest? 17. The average force required to compress a spring is 45.0N. The amount of work done compressing the spring is 5.82 J. What distance is the spring compressed to? 18. A 0.560kg bird is sitting on a branch 4.36 m above the ground. What is the gravitational potential energy? 19. A 68kg runner, is jogging at 12.36km/h. Calculate their kinetic energy. Write your answer in scientific notation. 20. A 98 kg object is initially moving across the ground with a velocity of 12.0 m/s. If it slides to rest in 0.780s. What is the net force producing this deceleration.

9 21. A 98kg runner has 3000J of kinetic energy. What is the runners kinetic energy? 22. A 5.20kg book falls off a shelf that is 3.40m above the ground. It lands on the ground. Calculate the speed of the book just before it hits the ground. 23. A 1.6 kg hammer is dropped 3.4 m onto a nail. If the nail is driven into the board 1.2 cm with how much force does the hammer hit the nail.

10 24. A 10.0 g pebble is placed within a slingshot. The slingshot is pulled back 32.3 cm with an average force of 36.0 N. It is then released. a) The work done on the slingshot? b) The speed of the pebble as it leaves the slingshot? 25. An arrow is shot straight up into the air. If it leaves the bow with a speed of 32.0m/s, how high does it travel? 26. Convert 136km/h to m/s.

11 THIS ONE IS TRICKY SO WATCH OUT DRAW A DIAGRAM IF YOU HAVE TO. THIS MAY GIVE YOU PROBLEMS WE DIDN T HAVE TRICKY ONES LIKE THIS. 27. A man is climbing a flagpole in the winter. There is 36 cm of snow on the ground. If the man is 3.0m above the ground and drops a tape measure what is its speed just before it hits the snow. 28. What does the slope of a velocity vs time graph represent? 29. What is the difference between a vector and a scalar value?