Question

a force is applied on a body of mass 20 kg moving with a velocity of 20 m per s. the body attains a velocity of 50 m per s. calculate the work done​

Answer 1

Answer:

m=20kg

v=50m/sec

u=20m/sec

f=?

formula of force is,

f=m*a

a=v-u/t

we have v and u but,we find t

so,first upon we find t

after find t,

we have use this formula to find force,

f=m*(v-u/t)