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yaroslaw [1]
3 years ago
8

Immediately after the rock is released, is the magnitude of its acceleration greater than, less than, or equal to ?

Physics
1 answer:
vodomira [7]3 years ago
5 0

Answer:

Equal to g.

Explanation:

As the rock is thrown, the only force acting is gravity hence the rock accelerates at the rate of g. No external forces act on the rock since its motion is in line with gravity.

The initial velocity of the rock however would be greater than had it just been released so it would strike the bottom before a rock that was simultaneously dropped. The acceleration does not change once thrown.

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The force required is 319 N

Explanation:

The force of static friction is a force that acts an object on a surface, when this object is pushed by another force to put it in motion. The direction of the force of friction is opposite to the direction of the force of push, and its value increases as the force of push increases, up to a maximum value given by:

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For the pile of leaves in this problem, we have:

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Substituting, we find:

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Learn more about force of friction:

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