A ball is thrown upwards and caught when it comes back down.In the presence of air resistance,the speed with which it is caught is always
A)more than the speed it had when thrown upwards.
B)less than the speed it had when thrown upwards.
C)the same as the speed it had when thrown upwards.
D)impossible to determine.

Question

Quizplus · Accepted Answer

When the ball is thrown upwards, it experiences an upward force due to the throw and a downward force due to gravity. As it rises, the force of gravity acts against the motion and slows it down until it reaches the highest point where its velocity becomes zero. Then, it starts to fall downwards and gains speed as it falls. However, in the presence of air resistance, the force of air also acts against the motion and slows it down. Thus, when the ball is caught, it has less speed than when it was thrown upwards. Therefore, the correct choice is B.

A Ball Is Thrown Upwards and Caught When It Comes