How much force is needed to keep a sled sliding on a frictionless surface at constant velocity?
Select one:
a. Lesser force because the surface has no friction
b. Just the right amount of force to keep its velocity constant
c. Force that is greater than the mass of the sled.
d. No force because force is not needed to keep an object moving
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Explanation:
It includes the law of inertia → if there is no force, F = 0, then the acceleration = 0 → the velocity doesn't change → no force is needed to keep an object moving with constant velocity. If there is more than one force acting on an object, then F is the net force.
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