Ball Thrown Vertically - Kinematics Question

Easy Physics Kinematics And Dynamics

In a controlled experiment, a student observes a ball being thrown vertically upwards from the ground with an initial velocity of 20 m/s. The student records the time it takes for the ball to reach its peak height and the time it takes to return to the ground. Assuming no air resistance, which of the following statements regarding the ball's motion is true?

The ball will reach its peak height in 2 seconds.

The total time for the ball to return to the ground is 4 seconds.

The ball's maximum height is 40 meters.

The acceleration of the ball at its peak height is zero.

Hint

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