Question

If a body of mass 5Kg is moving with a velocity of 10 m/s after 5s the body comes to rest then find (i) acceleration (ii) change in momentum (iii) Net force urgent

Answer 1

Answer:

u= 10m/s

v= 0m/s

t= 5 sec

a = v-u/t

= 0-10/5

= -2m/sec²

change in momentum= m(v-u)

= 5(0-10)

= -50 kgm/sec

net force= m×a

= 5×(-2)

= -10kgm/sec² or -10N