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Questions  

A particle is projected from a horizontal plane with a velocity of 82m/s at an angle. At the highest point, its velocity is found to be 8 m/s. Its range will be

a
6.4 m
b
3.2 m
c
12.8 m
d
4.6 m

detailed solution

Correct option is C

The velocity at the highest point =v=v0cos⁡θ0or    8=82cos⁡θ0 or θ0=45∘ Range =v02sin⁡2θ0g=(82)2sin⁡90∘10 64×210=12.8m

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