Q.
A projectile has a time of flight T and range R. If the time of flight is doubled, keeping the angle of projection same, what happens to the range?
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a
R/4
b
R/2
c
2R
d
4R
answer is D.
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Detailed Solution
RT2=u2sin2θ/g4u2sin2θ/g2=g2cotθ i.e., gT2=2Rtanθ If T is doubled, then R becomes 4 times.
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