Author Question: You lift a 10. lb physics book up in the air a distance of 1 ft, at a constant velocity of 0.5 ft/s. ... (Read 73 times)

ssal · **on:** Jul 27, 2018

You lift a 10. lb physics book up in the air a distance of 1 ft, at a constant velocity of 0.5 ft/s. The work done by gravity is

A) +5 ftlb.
B) -10 ftlb.
C) -5 ftlb.
D) zero.
E) +10 ftlb.

Question 2

Sandstone is a common type of

A) meteoritic rock
B) sedimentary rock
C) metamorphic rock
D) igneous rock