Question 17: Which of the following movements has been changed?

A. A bicycle is traveling, suddenly brakes, the bike stops.

B. An airplane is flying straight at a constant speed of 500 km/h.

C. A motorcycle is moving at a steady speed.

D. The ball is resting on the ground.

A motion with a change in velocity is a motion with a change in the magnitude of the velocity and the direction of the velocity ⇒ Answer A.

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