Which of the following must be happening if an object is in uniform circular
motion?
oa. the object's velocity must be changing.
ob. the object's centripetal. acceleration must be changing.
oc. the object must be moving in a straight line.
o d. the object's speed must be changing.

Describe the path of the electric current through a circuit?

This is the substance(s) formed in a chemical reaction.

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?