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Two friends on roller-skates are standing 5 m apart facing each other. One of them throws a ball of 2 kg towards the other, who catches it, How will this activity affect the position of the two? Explain your answer.
Initially before throwing the ball the momentum of both of them is .
The one who throws the ball will move to conserve the momentum imparted on ball.
Now, the other one who catches it will move as he will experience a net force after catching the ball.
Hence, distance between them will .
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