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Question
Two friends on roller-skates are standing 5m apart facing each other. One on the left throws a ball of 2kg towards the other, who catches it. How will this activity affect the position of the one on the right?
Two friends on roller-skates are standing 5m apart facing each other. One on the left throws a ball of 2kg towards the other, who catches it. How will this activity affect the position of the one on the right?
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Solution
The correct option is B He moves towards right.
The separation between them will increase. Initially, the momentum of both of them is zero as they are at rest. In order to conserve the momentum the one who throws the ball would move backward. The second will experience a net force after catching the ball and therefore will move backward that is in the direction of the force.
The separation between them will increase. Initially, the momentum of both of them is zero as they are at rest. In order to conserve the momentum the one who throws the ball would move backward. The second will experience a net force after catching the ball and therefore will move backward that is in the direction of the force.
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