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Starting from rest, a 4.0-kg body reaches a speed of 8.0 m/s in 2.0 s.

What is the net force acting on the body?

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F=ma

F=4xa

a= 8.0m/s / 2.0 s = 4.0 m/ss

F=4kg x 4 m/ss = 16 kgm/ss

kgm/ss = N (newtons)

F=16 N

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