Author Question: Which of these undergoes circular motion? a. A bullet shot from a gun. b. A top spinning on a ... (Read 153 times)

tingc95 · **on:** Jul 28, 2018

Which of these undergoes circular motion?
a. A bullet shot from a gun.
b. A top spinning on a table.
c. A baseball hit by a bat.
d. A satellite orbiting the Earth.
e. An apple falling out of a tree.

Question 2

Why does a parachutist stop accelerating downward after opening the chute and then falling some distance?
a. Because of the influence of the parachute, there is no longer a pull on the parachutist due to gravity.
b. The parachutist's weight becomes zero as a result of the tug of the parachute.
c. Air resistance produces a pull on the parachutist that is equal and opposite to the pull of gravity.
d. The speed of freely falling objects is a constant.
e. All objects fall with the same acceleration.