A car of mass 1000 kg moves along a straight

PHYSICS · Single correct · CBSE · Physics · Force and Laws of Motion · Force and Laws of Motion

Problem

A car of mass 1000 kg moves along a straight, level road at a constant speed of 20 m/s. Which one of the following statements about the car’s net horizontal force and acceleration is correct? (a) Net horizontal force is 20 000 N20\,000\,\text{N} in the direction of motion and acceleration is 0  m s−20\;\text{m\,s}^{-2}. (b) Net horizontal force is 00 and acceleration is 20  m s−220\;\text{m\,s}^{-2}. (c) Net horizontal force is 00 and acceleration is 0  m s−20\;\text{m\,s}^{-2}. (d) Net horizontal force is 9 800 N9\,800\,\text{N} in the direction of motion and acceleration is 9.8  m s−29.8\;\text{m\,s}^{-2}.

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