QUESTION 2

Shane hits a ball vertically, giving it an initial speed of 40.3 m s-1. The ball moves directly upwards, and then falls back to Earth.

To answer the questions on the right, you will need to apply the Kinematic Equations of Motion to figure out the times, distances and speeds involved.

Take the magnitude of the acceleration due to gravity to be 9.8 m s-2.


Hint: Remember that the sign of this acceleration is negative.

1) How high does he hit the ball?

Express your answer in meters (m).

2) How long does it take the ball to return to him?

Express your answer in seconds (s).

3) How fast is the ball travelling when it returns to him?

Express your answer in meters per second (m s-1).