Question

A ball is thrown from the ground into the air. At the maximum height that it attains, what is true about its instantaneous velocity and acceleration?

• A. Velocity and acceleration, both are non-zero.
• B. Velocity is zero, but acceleration is non-zero.
• C. Velocity is non-zero, but acceleration is zero.
• D. Velocity and acceleration, both are zero.

Answer 1

The correct option is B Velocity is zero, but acceleration is non-zero.

When the ball reaches the maximum height, then it reverses its direction. Hence at that instant, the velocity becomes zero.

The acceleration due to gravity for the ball is still downwards, which is non-zero.

Hence, at the maximum height, the velocity is zero but the acceleration is non-zero.