find velocity and time

Asked by  | 1st Oct, 2013, 09:53: PM

Expert Answer:

v2=u2+2as

Here, u=10, g=-9.8, s=-495

v2=102+2(9.8)(495)

v=99ms-1

-495= 10t - 1 (9.8)t2

                 2


        = 10t-4.9t2

4.9t2-10t-495 = 0

/ 9.8

    = 11.12 sec

Answered by Faiza Lambe | 1st Oct, 2013, 10:08: PM

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