To keep a particle moving with constant velocity on a frictionless surface
PHYSICS · Single correct · CBSE · Physics · Force and Laws of Motion · Force and Laws of Motion
Problem
To keep a particle moving with constant velocity on a frictionless surface, an external force
should act continuously
should be a variable force
not necessary
should act opposite to the direction of motion
(1) should act continuously
(2) should be a variable force
(3) not necessary
(4) should act opposite to the direction of motion