A scooter accelerates from rest for time t1 at constant rate a1 and then retards at constant rate a2 for time t2 and comes to rest. The correct value of ${{{t_1}} \over {{t_2}}}$ wil be :
${{{a_1} + {a_2}} \over {{a_2}}}$
${{{a_1} + {a_2}} \over {{a_1}}}$
${{{a_2}} \over {{a_1}}}$
${{{a_1}} \over {{a_2}}}$
Solution
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