Q.

The velocity time graph of a 2kg body is shown. Then the wrong statement is

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a

Work done on the object in 30 sec is zero.

b

Average acceleration of the object is zero.

c

Average velocity of the object is zero.

d

The average force on the object is zero.

answer is C.

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Detailed Solution

Work done is zero as there is no change in K.E average velocity is displacement/ time. Area of the v-t graph is displacement. As area is not equal to zero, average velocity is not zero.
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The velocity time graph of a 2kg body is shown. Then the wrong statement is