Question

Newton’s first law of motion says that a moving body should continue to move forever , unless some external forces act on it. But a moving cycle comes to rest after some time if we stop pedaling it. Can you choose the correct reason for the stoppage of cycle?

Answer 1

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In this case,the bicycle has been compelled to change its state of motion by the external force of air resistance and friction.If there were no air resistance and no friction to oppose the motion of the bicycle, then according to the first low of motion, the bicycle would go on moving forever.