Question

3. The momentum of a moving body is 20 kg m/s moving with the velocity of 4 m/s. If the object is brought to rest in 4 s. Calculate i) its mass ii) the change in momentum plz ans step by step

Answer 1

Answer:

m=P/v=20/4=5kg and for the change in momentum you can very easily calculate it by mv1-mv2 where V2 is zero so answer mv1 in the there = 20*4=80kgm/s