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?