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Is Matter Around Us Pure
Question
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In the following example, try to identify the number of times the velocity of ball changes:

“A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards the player of his own team”.

Answer

In the given situation, velocity of ball changes three times. 

First time, when the football player of one team kicks the ball, velocity changes. 
Second time, the velocity changes when another player of same team kicks the football.
Third time, the velocity changes when the goalkeeper of the opposite team kicks the football.

 

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