An object moving with speed 
collides head-on with an object at rest that is very much more massive. If the collision is elastic, how does the lighter object’s speed 
after collision compare to ?
A. 
B. 
C. 
D. 
E. 
F. 
B.
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Significant Figures: In the product A ? B ? C, A has 5 significant figures, B has 2 significant figures, and C has 3 significant figures. How many significant figures does the product have?
A. 2 B. 3 C. 4 D. 5 E. 10
The object shown below has mass m and velocity 
. The direction of its angular momentum vector with respect to an axis perpendicular to the page through point O is
A. downwards. B. to the right. C. into the page. D. up out of the page. E. counterclockwise.
Kepler used Tycho's observations to show that the planets
a. followed perfectly circular orbits. b. followed perfectly cubical orbits. c. all circled the Earth. d. followed elliptical orbits.
An FM radio station broadcasts at 98.6 MHz. What is the wavelength of the radiowaves?
a. 60.8 m b. 6.08 m c. 3.04 m d. 0.314 m e. 0.33 cm