Question

Q.7
A particle is projected with speed u at an angle of elevation a, where tana=3. Find, in terms of u and
g, the height of the particle when its speed is u/2.
A) 3u^2 / 8g
B) u^2 / 8 g
C) 3u^2 /g
D) 5u^2 /8g
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Answer 1

Explanation:

(A) is the correct answer.