Conceptual questions

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I am trying to prepare for a exam. It would be great if someone could help me understand these concepts. Thanks!

When rounding a curve in your car, you get the impression
that a force tries to pull you toward the outside
of the curve. Is there such a force?

A fisherman wants to reel in a large dead fish hooked
on a thin fishing line. If he jerks the line, it will break;
but if he reels it in very gradually and smoothly, it will
hold. Explain.

When you are standing on the earth, your feet exert
a push against the surface. Why doesn’t the earth
accelerate away from you?

In a tug–of–war, two teams of children pull on a rope.
Is the tension constant along the entire length of the
rope? Along what portion of the rope is it constant?

When a car accelerates on a level road, the force that
produces the acceleration is the push of the road on
the wheels. If so, why does the automobile need an
engine?
 

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