In a car race on straight road, car A takes a time t less than car B at the finish and passes finishing point with a speed '$\upsilon $' more than that of car B. Both the cars start from rest and travel with constant acceleration a1 and a2 respectively. Then '$\upsilon $' is equal to :

more than that of car B. Both the cars start from rest and travel with constant acceleration a1 and a2 respectively. Then '$\\upsilon

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In a car race on straight road, car A takes a time t less than car B at the finish and passes finishing point with a speed '$\upsilon $' more than that of car B. Both the cars start from rest and travel with constant acceleration a₁ and a₂ respectively. Then '$\upsilon $' is equal to :

${{2{a_1}{a_2}} \over {{a_1} + {a_2}}}t$

$\sqrt {2{a_1}{a_2}} t$

$\sqrt {{a_1}{a_2}} t$

${{{a_1} + {a_2}} \over 2}t$

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