Q.

Statement -1 : A body moving in a straight line with a constant speed must have a zero acceleration.

Statement -2 : A body moving along a curve (other than straight line) with a constant speed may have a zero acceleration.

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a

Statement is false, Statement-2 is true

b

Statement-1 is true, Statement-2 is false.

c

Statement-1 is true, Statement-2 is true but statement-2 is NOT the correct explanation for statement-1

d

Statement-1 is true, statement-2 is true and statement-2 is the correct explanation for statement-1.

answer is C.

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Detailed Solution

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The velocity of a body moving along a curve continuously changes because its direction of  motion is changing. Hence a body moving along a curve with a constant speed has acceleration called centripetal acceleration.

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