Which of the values below is closest to the magnitude of W?
A. 0.6 J
B. 1.5 J
C. 300 J
D. 600 J
E. 1500 J
F. 3000 J
D. 600 J
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A 3.0-kg object moving 8.0 m/s in the positive x direction has a one-dimensional elastic collision with an object (mass = M) initially at rest. After the collision the object of unknown mass has a velocity of 6.0 m/s in the positive x direction. What is M?
a. 7.5 kg b. 5.0 kg c. 6.0 kg d. 4.2 kg e. 8.0 kg
The only force acting on a 2.0-kg body as it moves along the x axis is given by Fx = (12 ? 2.0x) N, where x is in m. The velocity of the body at x = 2.0 m is 5.5 
direction?
a.
36 J
b.
39 J
c.
43 J
d.
46 J
e.
30 J
Suppose the energy density from a charge has a value at a position 3 meters away from a point charge. If the charge is quadrupled, by what factor does the energy density change at the same position 3 meters away?
a. 8/3 c. 4 b. 4/9 d. 16
An object is placed between C and F in front of a concave mirror with a focal length of 10 cm. What is the position of its image in relation to the mirror and what are its characteristics?
A) = 10 cm, real, smaller than object B) = 10 cm, virtual, smaller than object C) > 20 cm, real, larger than object D) = 20 cm, real, same size as the object E) = 20 cm, virtual, same size as the object