Iwill mark ! a motorcycle is moving at a constant velocity of 15 meters/second. then it starts to accelerate and reaches a velocity of 24 meters/second in 3 seconds. what’s the acceleration of the motorcycle over this time? use . a. 9 m/s2 b. 8 m/s2 c. 6 m/s2 d. 5 m/s2 e. 3 m/s2

Anybody wanna ? (picture included? )

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.

Explain why electric current cannot exist if a current doesn't have a voltage source.