solve this please. only correct solns
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when the the body will be at the highest point then only its velocity will be perpendicular to acceleration.
so we need to find the velocity of the ball at highest point.
given:ang.of projection= 60
initial velocity=40m/s
time of the flight is = 2 u sin a/g
(2×40×√3/2)/10
4√3
since it is of whole journey but we have to find only of half
so it is 2√3
or better 2
so we need to find the velocity of the ball at highest point.
given:ang.of projection= 60
initial velocity=40m/s
time of the flight is = 2 u sin a/g
(2×40×√3/2)/10
4√3
since it is of whole journey but we have to find only of half
so it is 2√3
or better 2
Nuds:
according to u.. 2√3 = 3.42 ie 3
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