Question

Which describes an object’s speed when free falling in a vacuum?

The object accelerates until it reaches its terminal velocity.
The object falls at a constant speed because only one force acts on it.
The object falls faster and faster until it strikes the ground.
The object speeds up and then stops when air resistance equals gravity.

Answer 1

"The object falls faster and faster until it strikes the ground."

Explanation: in a vacuum there is no air resistance, so gravity is the only force and the object experiences constant downward acceleration (≈9.8 m/s²). Its speed increases continuously until it hits the ground.