A body is projected vertically up with u.its velocity at half of its height is
veenagathri , 8 Years ago
Grade 11
General Physics> A body is projected vertically up with u....
2 AnswersAbhinav
hmax = u2sin2
/ 2g
when the body at half of its hmax, height = u2sin2/4g
here=90
u2= hmax4g, u=sq.root of hmax4g
here
u2= hmax4g, u=sq.root of hmax4g
Approved Last Activity: 8 Years ago
Lohith
Consider 3rd equation of kinematics V2 - u2 = 2gh From this h = u2/2g For h/2 = u2/4gNow substitue in above equationV2 = u2 -((2g*u2)/4g)Cancel g and 2 V2 = u2 - u2/2V2 = u2/2There fore v = u/ sqr root of 2 (Note v2 means v square and u2 means u square)
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