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A bullet of mass 10g travelling horizont...

A bullet of mass 10g travelling horizontally with a velocity of 10 `ms(-1)`? strikes a bag filled with sand and penetrate 5 m insides and comes to rest, then
( 1 ) Calculate the resistant force on the bullet by the bag Alled with sand.
(2) Calculate the time for the bullet to come to rest.

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(1)`10^(5)N` (2) `10^(-4)S`
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