Question

An object of mass 100 kg is sliding with a constant velocity of 4 m/s on a frictionless horizontal table. The force required to keep the object moving with the same velocity is: A.0 N B.25 N C.200 N D.400 N

Answer 1

Answer:

no force required . i.e. 0

because, the acceleration is zero, constant velocity.

f=ma

f=100x0=0

Answer 2

constant velocity means 0 acceleration

and according to Newton second laws of motion

F=Ma

F=100×0

F=0

force requires 0

so A is the correct answer

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