Semester 1 Exam C Review:

1. What do we call the combination of all forces that act on an object?

2. review Lesson 3.01

3. If you go to the Moon explain what happens to your mass and weight.

4. Does an object at rest have forces acting on it and if so what are they?

5. According to Newtons Second law, how are acceleration and mass related? Directly or indirectly when force is constant?

6. Gravitational force of attraction “F” exists between two point masses A and B when a fixed distance separates them. After mass A is doubled and mass B is quartered, the gravitational attraction between the two masses is:

7. What is an essential characteristic of an object in equilibrium?

8. define Nektons 1st, 2nd and 3rd laws

9. review 3.13

10. Which of the fundamental forces is the strongest force?

11. define the inertia and what it applies to.

12. Define the Law of Conservation of momentum, does it aply to inelastic and elastic collisions?

13. review 3.18

14. An object with a mass of 10.0 kg is accelerated at 5.0 m/s/s. The net force acting on the mass is

15. What are the units for Mass, weight, Energy, momentum, Impulse, Velocity and acceleration.

16. An object traveling at a 5.0 m/s East has a mass of 6.0 kg. What is the magnitude of the object’s momentum?

17. A table exerts a 10Newton force on a book which lies at rest on its top. The force exerted by the book on the table is

18. define:

electromagnetic force

gravitational force

strong nuclear force

weak nuclear force

19. The mass of an object is a measure of its?

20. An object travels in a circular path of radius 5.0 meters at a uniform speed of 5. m/s. What is the magnitude of the object's acceleration?

21. A projectile is launched at an angle of 6.0 degrees above the horizontal. Which component of the velocity vector remains the same during the flight (neglecting friction

22. A 5 N force directed to the west acts on an object for 2.0 seconds. What is the change in momentum of the object?

23. A 2.0 kg mass is moving to the right at 3.0 m/s. An 4.0 kg mass is moving to the left at 2.0 m/s.

A. If after collision the two masses join together what is their velocity after

collision.

B. Is this a elastic or inelastic collision?

24. What Net Force is necessary to give a 4.0 kg mass initially at rest an acceleration of 5.0 m/s^2?

25. A bat hits a ball; which has the greater acceleration the bat or the ball?

26. A passenger on a bus moving with uniform velocity lurches forward when the bus stops suddenly. Explain.

27. A rock is falling towards the Earth. Suppose the action force is the pull of the Earth on the rock. What is the reaction force?

28. A bullet with mass 0.40kg is fired with an initial velocity of 400 m/s from a gun with mass 5.0 kg. The speed of the recoil of the gun is