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Starting from rest, a 4.0-kg body reaches a speed of 8.0 m/a in 20 s. What is te net force acting on the body?
We dont have acceleration, a= change in velocity divided by the time taken. a = v (final velocity) - u (initial) / t a us 8-0 (at rest means u was 0) / 20 = 0.4
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