Question

A particle is projected at an angle o
from the horizontal with kinetic
energy T. The kinetic energy at the
highest point is
A
T cos?
B
T cos
C T2 cos?
DT cos 20​

Answer 1

A particle is projected at an angle of elevation α and after t second it appears to have an elevation of β as seen from the point of projection. Find the initial velocity of projection. On solving we get, u=gtcosβsin(α-β).

Answer 2

Answer:

T cos 20

Explanation:

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