A ball weighing 10g hits a hard surface ...

A ball weighing `10g` hits a hard surface vertically with a speed of `5m//s` and rebounds with the same speed The ball remains in contact with the surface speed The ball remains in contact with the surface for `0.01s` The average force exerted by the surface on the ball is .

100 N

10 N

1 N

0.1 N

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