Question

a body of mass 100 kg moving in a straight line with a velocity of 30 m/s moves in opposite direction with velocity of 20 m/s after hitting a wall what is the magnitude of impulse?

Answer 1

impulse =change in momentum

so

impulse=m(v-u)

here m=100kg

u=30m/s

v=-20m/s

so

impulse=100 (-20-30)

= (-5000)kg m/s

-ve sign indicates impulse is away from wall

Answer 2

Answer:

5000 absolute value

hope ur Dout cleared