A 200-N woman is standing on a concrete floor. How much force does the floor exert on her? a. Zero
b. 180 N
c. 200 N
d. undetermined

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.

What was the first instrument to ever record an earthquake?

Distinguish between linear momentum and angular momentum