Question

A body of mass2 kg is moving along positive X direction with velocity of 5 m/s now a force of 10underroot2 N is applied to angle 45 with X axis its velocity after 3 sec

Answer 1

fcos45=m(v-u)/t
10√2*1/√2=2v-10/3
30=2v-10
v=40/2=20