a ball of mass 10kg is initially moving with a velocity of 50m/s. On applying a constant forv=ce on the ball for 2s, it acquires a velocity of 70m/s. Calculate: a) the initial momentum of the ball b)the final momentum of the ball c)the acceleration of the ball d) force applied on the ball

mass = 10 kg u = 50 m/sv=70 m/s1) initial momentum = mu = 50 x 10 =500 kgm/s2) final momentum = mv = 70 x 10 = 700 kgm/s 3)acceleration = 70 -50/2 = 10 m/s24)force =final-initial momentum /time = 200 /2=100 N

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