Question

Assertion (A) : The average velocity of a body moving with non uniform velocity is equal to arithmetic mean of initial and final velocity of the body.

Reason (R) : The velocity of the body changes by equal amount in equal intervals of time.

Find the appropriate choice as what?

Options:

•Both assertion(A) and reason(R) are true and reason (R) is the correct explanation of assertion.

•Both assertion (A) and reason (R) are true, but reason (R) is not the correct explanation of assertion.

•Assertion(A) is true, but reason (R) is false.

•Assertion (A)is false, but reason (R) is true.

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Answer 1

Answer:

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Text Solution

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Solution

Let u be the initial velocity of a body and a be its uniform acceleration. After time t the body acquires a velocity b (say) and s its displacement. Hence average velocity of the body =st. Again the arithmetic mean of the initial and the final velocities of the body

=u+v2=u+u+at2=u+12at

=(u+12at)tt=ut+12at2t=st (Proved).

Answer 2

Explanation:

A clause is a group of words that contains a verb (and usually other components too). A clause may form part of a sentence or it may be a complete sentence in itself. For example: He was eating a bacon sandwich. [clause