Aparticle moving uniformly along the x axis is located at 13.4 m at 1.72 s and at 3.13 m at 4.6 s. what is its average velocity during this time interval? answer in units of m/s.

In a system, when potential energy decreases, then entropy also decreases. true false

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.

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?