(a) State and explain newton's second law of motion
(b) A 1000 kg vehicle is a moving process with a speed of 20 m/S is brought to rest in a distance of 50 m ;
(1)find the acceleration.
(2) calculate the unbalanced force acting on the vehicle.
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(a) Newton's second law of motion states that the rate of change of momentum of an object is directly proportional to the applied unbalance force.
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