A ball is thrown at different angles with the same speed u and from the same points and it has same range in both the cases. If y1 and y2 be the heights attained in the two cases, then y1 + y2 =
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a
u2/g
b
2u2/g
c
u2/2g
d
u2/4g
answer is C.
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Detailed Solution
y1=(usinθ)22g and y2=usin90∘−θ22gor y2=(ucosθ)22g∴ y1+y2=u22gsin2θ+cos2θ=u22g
A ball is thrown at different angles with the same speed u and from the same points and it has same range in both the cases. If y1 and y2 be the heights attained in the two cases, then y1 + y2 =