Question

A force acts for 10sec on a stationary body of mass kg after which the force ceases to act. the body moves through a distance of m in the next 5sec. Calculate 1. the velocity acquired by the body
2. the acceleration produced by the force
3. The magnitude of the force.
plz answer fast

Answer 1

from Newton's second law 
F is directly proportional to linear momentum and the motion is in direction of force.
F= k * p( where p= mv)
F= k* dp/dt

F= k* d(mv)/dt
F= k* m(v- u)/t
F= ma   

velocity final = v
acceleration= v-u/t
F= ma