Last Activity: 11 Years ago
136m
Just apply the first equation of motion:
v=u+at
at t=2 and t=4
i.e.,
20=12+2a;
this will give ''a'' which will in turn give the initial velocity at t=0 again by the same formula.
After that i dont think it will be a problem to get the req. answer.
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Last Activity: 2 Years ago