JEE Main Physics question

Physics Motion in a Straight Line JEE Main

A particle is moving on a straight-line path with constant acceleration directed along the direction of instantaneous velocity. Which of the following statements are false about the motion of the particle?

(A)Particle may reverse the direction of motion
(B)Distance covered is not equal to the magnitude of displacement
(C)The magnitude of average velocity is less than average speed
(D)All of the aboveCorrect

Answer: (D)

Solution

Since the acceleration is always along (never opposed to) the instantaneous velocity, the speed only increases — the particle can never slow to zero and reverse, so (A) is false. Because the particle never reverses, the motion is always in one direction: distance

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Question ID VK-152013