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Answer #1:

The y intercept should be zero because of Newton's second law. Force and

acceleration are directly proportional. The X intercept indicates that there is

some force required to overcome friction if friction is not negligible. This value

is the force required to accelerate the object usually very small.

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Answer #2:

It's even easier than that. The graph had better pass through the origin,

because zero force on an object means it can't be accelerating, and zero

acceleration of an object means there can't be any net force acting on it.

Go back and read Answer #1 above very carefully. It correctly says that the

y-intercept is zero. But doesn't that mean that the graph must go through the

origin, and that the x-intercept is therefore also zero ? I'm just sayin . . .

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11y ago

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