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VIDEO ANSWER: All right, the acceleration of a bobsled is 2 .4 meters per second square. The forces resisting motion are 450 newt. So I'll put R for resisting motion. It's rider weighs 270 kilograms. A, what's the
Concept Simulation 4.1 at www.wiley.com/college/cutnell reviews the concepts that are important in this problem. The speed of a bobsled is increasing because it has an acceleration of 2.4  m / s^2. At a given instant in time, the forces resisting the motion, including kinetic friction and air resistance, total 450  N. The combined mass of the bobsled and its riders is 270  kg. (a) What is the magnitude of the force propelling the bobsled forward? (b) What is the magnitude of the net force that acts on the bobsled? | Numerade