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30 December, 14:51

The force required to start an object sliding across a uniform horizontal surface is larger than the force required to keep the object sliding at a constant velocity. The magnitudes of the required forces are different in these situations because the force of kinetic friction

a) decreases as the speed of the object relative to the surface increases.

b) is greater than the force of static friction.

c) increases as the speed of the object relative to the surface increases.

d) is less than the force of static friction

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  1. 30 December, 15:09
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    The force required to start an object sliding across a uniform horizontal surface is larger than the force required to keep the object sliding at a constant velocity once it starts.

    The magnitudes of the required forces are different in these situations because the force of kinetic friction is less than the force of static friction. (d)
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