Question

A ball is tossed upward on planet Earth. The total time for the trip up and down is exactly 2.0 seconds. Which of these statements is NOT correct?

The velocity of the ball at the top of its path is 0 m/s.
The time it took the ball to reach the top of its path is 1.0 second,
The acceleration of the ball on the way up to the top is -9.8
The acceleration of the ball at the top of its path is 0 m/s.

Answer 1

The acceleration of the ball at the top of its path is -9.8 m/s², not 0 m/s².

Step-by-step explanation:

The statement that is NOT correct is: The acceleration of the ball at the top of its path is 0 m/s.

When a ball is tossed upward on planet Earth, its acceleration is always in the opposite direction to the motion. The acceleration due to gravity on Earth is approximately -9.8 m/s². Therefore, the acceleration of the ball at the top of its path is still -9.8 m/s², although its velocity is 0 m/s.