The velocity of a body of mass 10kg increases from 4m/s to 8m/s when a force acts on it for 2s. (a) What is the momentum before and after the force acts? (b) What is the gain in momentum per second? (c) What is the value of the force?
Added by Shirlin S.
Step 1
So, before the force acts, the momentum is p1=m*v1=10kg*4m/s=40kg*m/s. After the force acts, the momentum is p2=m*v2=10kg*8m/s=80kg*m/s. Show more…
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