Question

A cart is moving with a velocity 20 m/s. Sand
is being dropped into the cart at the rate of
50 kg/min. The force required to move the cart
with constant velocity will be :-
(1) 50 N
(2) 30.33N
(3) 26.45N
(4) 16.66N​

Answer 1

see this attachment and you will find your answer