A trolley containing water has total mass 1000 kg. Now water starts coming out of the trolley at the rate of 10 kg/s from below it. Find the velocity of the trolley after 50 sec, if the initial speed is 10 m/s on the horizontal frictionless road.

 

• A

  10 m/s

• B

  20 m/s

• C

  15 m/s

• D

  none