A particle of mass 120g moving at speed of 750cm/s is acted upon by a variable forrenpposite to its direction of motion as shown in figure. If the velocity of the particle becomes 250cm/s along the direction of force, fund the value of time't' for which force acted.

A particle of mass 120g moving at speed of 750cm/s is acted upon by a

1.	A particle of mass 120g moving at speed of 750cm/s is acted upon by a variable forrenpposite to its direction of motion as shown in figure. If the velocity of the particle becomes 250cm/s along the direction of force, fund the value of time't' for which force acted.
Answer» 6SEC 9SEC 18SEC 27 sec Answer :C