Help I need this fast.

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

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.

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of