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Question: A ball of mass 150g starts moving with an acceleration of \(20m/s^{2}\). When hit by a force, which ...

A ball of mass 150g starts moving with an acceleration of 20m/s220m/s^{2}. When hit by a force, which acts on it for 0.1 sec. The impulsive force is

A

0.5 N-s

B

0.1 N-s

C

0.3 N-s

D

1.2 N-s

Answer

0.3 N-s

Explanation

Solution

Impulse = Force × time = m a t

=0.15×20×0.1=0.3N⥂−⥂s= 0.15 \times 20 \times 0.1 = 0.3N ⥂ - ⥂ s