Asked by Tolu

8kg mass moving with a speed of 30ms^-1 is brought to rest in 2.5s by a constant retarding force.calculate the magnitude of the force.
Answered by bobpursley
acceleration= velocitychange/time
force*time= changemomentum= mass*changevelocty
force= mass*changevelocity/time
force= 8*30/2.5 N
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