If you drop a ball off a cliff, it starts out a 0 m/s. After 1 s, it will be traveling at about 10 m/s. If air resistance is removed, what will happen in 2 s? And how do you know this?

A. The ball will still be moving at 10 m/s.

B. The ball will accelerate to 10 m/s.

C. The ball will accelerate to about 20 m/s.

Question

Bryanna King

Physics

14 January, 21:59

If you drop a ball off a cliff, it starts out a 0 m/s. After 1 s, it will be traveling at about 10 m/s. If air resistance is removed, what will happen in 2 s? And how do you know this?

A. The ball will still be moving at 10 m/s.

B. The ball will accelerate to 10 m/s.

C. The ball will accelerate to about 20 m/s.

+1

Answers (2)

Know the Answer?

Ryan Barron · Answer 1

This anwser is C!

Shania Holmes · Answer 2

Answer: (C) The ball will accelerate to about 20 m/s.

Explanation: The ball is in free fall and no other but gravitational force acts on it. This means the ball will be subject to the gravitational acceleration, which is about 9.8 m/s^2. So after one additional second the ball will increase its velocity to (10+9.8) m/s = 19.8 m/s or approx. 20 m/s.