If a particle is moving along a straight line | vedclass

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Question

(B) If the speed of a body is increasing,the acceleration must be in the same direction as the velocity.However,the magnitude of acceleration does not

Vedclass · Accepted Answer

Its acceleration may be decreasing

Vedclass · Answer

(B) If the speed of a body is increasing,the acceleration must be in the same direction as the velocity.However,the magnitude of acceleration does not necessarily have to be constant or positive.For example,if a particle moves in the positive direction with velocity $v > 0$,and its acceleration $a$ is positive and decreasing (e.g.,$a = 2 - t$),the speed will still increase as long as $a > 0$.Similarly,if a particle moves in the negative direction with velocity $v Therefore,the acceleration can be positive or negative,and its magnitude can be decreasing while the speed is increasing.

Column-$I$	Column-$II$
$(1)$ Acceleration is positive	$(a)$ Speed of the particle decreases
$(2)$ Acceleration is negative	$(b)$ Speed of the particle increases
	$(c)$ Speed of the particle keeps changing

If a particle is moving along a straight line with increasing speed,then:

Similar Questions

The correct position $(x)$ - time $(t)$ graph for a particle moving with negative acceleration is

Match the items in Column-$I$ with the items in Column-$II$ correctly.

Column-$I$ Column-$II$

$(1)$ Acceleration is positive $(a)$ Speed of the particle decreases

$(2)$ Acceleration is negative $(b)$ Speed of the particle increases

$(c)$ Speed of the particle keeps changing

The position,velocity,and acceleration of a particle moving with a constant acceleration can be represented by:

What is retardation?

If velocity and acceleration are in opposite directions in one-dimensional motion,what happens to the magnitude of velocity?

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