Question

a particle of mass 120g moving at speedof 250cm per seconds is acted upon in the opposite direction of its motion if the velocity becomes 650cm per seconds along the direction of force find the value of time t for which force acted​

Answer 1

Answer:

Initial momentum of the particle =(0.07)(0.5)=0.035kgm/s

The impulse given to the particle is equal to the area under the F−t graph =0.07kgm/s=2× initial momentum of the particle. Hence, the particle will reverse direction and move with its initial speed.