A ball thrown upwards reaches a maximum height and then comes back down to the original level.
At the peak of the motion the velocity and acceleration are both zero.

Question

A ball thrown upwards reaches a maximum height and then comes back down to the original level.  
At the peak of the motion the velocity and acceleration are both zero.

Quizplus · Accepted Answer

At the peak of the motion, the velocity of the ball is zero because it momentarily stops before coming back down, but the acceleration is not zero; it is equal to the acceleration due to gravity (approximately 9.81 m/s^2 downward) since gravity is continuously acting on it.

A Ball Thrown Upwards Reaches a Maximum Height and Then