Question

To keep a particle (body) moving with constant velocity on a
moving with constant velocity on a frictionless horizontal surface an
external force
a) should act continuously
c) should not act
moment of inerti
b) should be a variable force
d) should act opposite to the direction of motion


PLEASE SAY THE ANSWER...PLEASE

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Answer 1

(d)should act opposite to the direction of motion

Answer 2

Answer:

c) should not act

Explanation:

To keep the particle moving, moving with constant velocity on a frictionless horizontal surface an external force need not to apply continuously. As the horizontal surface is frictionless so there will be not any frictional force on the body in the opposite direction of its motion. So, we just need to give a push to the body once, just to make it in motion and the body will be continued in motion.