A football of mass 5 kg moving with a velocity of 10 m/s hits a pole and, the ball turns back and moves with a velocity of 20 m/s. Find the impulse and the force exerted on the ball, if the force acts for 0.02sec
Answers
Answered by
35
in the given question, the mass of the football is 0.5 kg. The initial velocity give is 10 m/seconds.
Therefore accordingly, the initial momentum of the ball is given by mass x initial velocity, i.e., 10 x 0.5 = 5kgm/sec. now the final velocity is -20 m/seconds.
Therefore final momentum is mass x final velocity, i.e., 0.5 x -20 = -10 kgm/sec. impulse = 5- (-10)= 15 kgm/s, and force = 15/0/02= 750 N
Answered by
0
Answer:
750 N
Hope it will help.
Similar questions