Question

Momentum of a body decreases from 40 kg m/s to 20 kg m/s in 5 second, then the force applied is


a) 4 N

b) - 4 N

c) 100 N

d) - 100 N​

Answer 1

Answer:

B IS THE CORRECT ANSWER.

Explanation:

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Answer 2

40kg m/s -20 kg m/s

=20 kg m/s

time = 5 seconds

force = 20 kg m/s /5

=-4 N