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a body is projected at an angle 60 with horizontal plane with k.E 'k' when the velocity makes 30 with x axiz what is its k.E? -if t1,t2 are the time of flights for two complimentary angles then range( in terms of g,t1,t2) is?

a body is projected at an angle 60 with horizontal plane with k.E 'k' when the velocity makes 30 with x axiz what is its k.E?


-if t1,t2 are the time of flights for two complimentary angles then range( in terms of g,t1,t2) is?

Grade:Upto college level

1 Answers

Badiuddin askIITians.ismu Expert
148 Points
13 years ago

Dear akash

let initial velocity is u

and v is the velocity when it make angel 30

ucos60=vcos30

v=u/√3

 

k=1/2 m u2

u=√(2k/m)

so v=√(2k/3m)

now K .E =1/2 m v2

             =k/3 

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