Final S1 Study Guide: Write answers in complete sentences on a separate page.

  1. After 200 miles of driving you notice that it’s been 2.8 hours since you first started driving.What would be the average speed of the trip you just went on?
  2. A car accelerates at 15 m/s/s. How much time would it take for the car to speed up from 0 m/s to 80 m/s?
  3. A 6,000 kg car hits a bug on the highway. If the car decelerates at 0.0002 m/s/s, what is the force on the car?  What is the acceleration of the bug, if the bug has a mass of 0.15 kg?
  4. What is the difference between a vector and a scalar?
  5. When a motorcycle accelerates, explain what is happening to its speed. Explain what happens to the distance traveled as it accelerates.
  6. How would you calculate the acceleration of an object if you knew both the force applied to an object as well as its mass?
  7. A 20,000 kg rocket in outer space is accelerating at a rate of 50 m/s/s.Explain what is happening to its speed. If the captain turns off his thrusters and stops accelerating, what would happen to his speed then?
  8. What is the Law of Inertia?
  9. Explain what Newton’s Third Law says.
  10. How are acceleration and mass related? How are acceleration and force related?
  11. Which force is greater: the gravitational force on the moon from the Earth or the gravitational force on the Earth from the moon?
  12. If a massive linebacker hits a smaller runningback (both running toward each other) which one would experience a greater force? Which one would experience a greater acceleration?
  13. What does Inertia refer to?
  14. Kyle pushes a refrigerator with a force of 100 N right. There is 60 N of friction.  What would be the net force on the refrigerator?  What would be the acceleration of the refrigerator if it has a mass of 200 kg?  How hard would Kyle have to push the refrigerator in order to achieve constant speed?
  15. If you drop a basketball and a tennis ball at the same time from the same height, in the absence of air resistance, which one will hit the ground first? Why? Which one would has a greater gravitational force?
  16. If you throw a ball straight up into the air, what would be the acceleration of the ball when it’s coming back down?What would be the acceleration of the ball at the very top of its path?  What would be the speed of the ball at the very top of its path?
  17. How would the mass of a book change on the surface of mass? What about its weight; how would that change?
  18. Rank the following items with momentum, from smallest to largest: a building, a baseball traveling at 50 mph, a car traveling at 40 mph, a truck traveling at 40 mph.
  19. If a train moving right at 10 m/s hits an identical train moving left at 10 m/s, what would happen to the speed of both trains, if they stick together?
  20. What does momentum mean? What does impulse mean?
  21. A train with a mass of 15,000 kg moving at 13 m/s rights hits a 2,000 kg car moving left at 60 m/s. If the two stick together after colliding, what would be the final momentum of the system?  What would be the final speed of the system?
  22. Two identical cars are both traveling at 80 m/s.One crashes into a brick wall and comes to a stop, the other crashes into a haystack and comes to a stop over a longer period of time.  Which one experiences the greater impulse?  Which one experiences the greater force?  Which one experiences the greater change in momentum?
  23. What are the properties of an elastic collision?What are the properties of an inelastic collision?
  24. Why does a boxer’s punching glove help protect a boxer’s hand from hard collisions?
  25. What would be the kinetic energy of a 1 kg ball traveling at 1 m/s? What would be the kinetic energy of the ball if its speed increased to 4 times faster? What if its speed increased to 5 times faster?
  26. What’s the difference between potential energy and kinetic energy? What are all of the types of potential energy?  What are all of the types of kinetic energy?
  27. What would be the potential energy of a bird with a mass of 1.8 kg, while it is 20 meters high in the air?
  28. What is mechanical energy?
  29. A 1.1 kg arrow has been fired out of a bow; it travels at 12 m/s. What is the kinetic energy of the arrow?  How much elastic potential energy must it have had before it was fired?
  30. How much power would it take to complete 200 J of work in 7 seconds?
  31. How much power would it take to push a box with 45 N for a distance of 3 meters in 8 seconds?
  32. How much work would it be to push a canoe if you exerted 250 N over a distance of 5.5 meters?
  33. What is the difference between a rotation and a revolution? Give an example of each.
  34. If you whirl a slingshot around in a circle, and it suddenly breaks, which direction would it travel after leaving your hand? Draw a sketch to explain.
  35. On a merry-go-round, where would you be traveling the fastest, in terms of linear speed? What about rotational speed?
  36. A motorcycle is traveling around a curve.It has a mass of 800 kg, and it is not speeding up.  What do you know about the acceleration of the motorcycle; is there any?
  37. A bug in resting on a car tire’s hubcap.Assuming it survives the journey, which direction would the force be pointing, when the car begins moving?
  38. The starting gravitational force between two comets is 180 N. If the distance between them becomes 4 times farther away, what is the new gravitational force?
  39. What does the gravitational force of two planets in space depend on? Which factors are directly related and which factors are indirectly related?
  40. How would your weight change if the mass of the Earth decreased, but you were the same distance away?