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? i. Air resistance ii. Gravitational pull of the earth iii. Friction of the road iv. Heat of the environment

Answer 1

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 law of motion, the bicycle would go on moving.

Answer 2

Answer:

your answer

Explanation:

According to Newton's first law, the only time the bicycle would stop, is if it is acted upon by an external force. ... The external force in this case is the friction between the bicycle and the ground. The force of friction gradually reduces the moving force until it gets to zero and the bicycle stops moving