A train moves from rest with a uniform acceleration a . Attaining a maximum speed v it starts

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2.Motion in Straight Line

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A train moves from rest with a uniform acceleration $a$ . Attaining a maximum speed $v$ it starts moving with uniform retardation $a$ . Assuming $s$ = total distance covered in the unidirectional motion of the train, its total time of journey and maximum speed are (respectively).

A

$\sqrt {\frac{s}{a}},\sqrt {as}$

B

$2 \sqrt {\frac{s}{a}},\sqrt {as}$

C

$\sqrt {\frac{2s}{a}},\sqrt {as}$

D

$\frac{1}{2} \sqrt {\frac{s}{a}},\sqrt {\frac{as}{2}}$

Solution

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Standard 11

Physics

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