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127. Two stones are projected with the same speed butmaking different angles with the horizontal. Theirranges are equal. If the angle of projection of oneisand its maximum height is y,, then the123maximum height of the other will be:yi2 (4) i91(1) 3y,(2) 2y,(3)3 |
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Answer» Answer: 4)y1/3Explanation:range=u^2 sin 2 theta /gsin 2(90- theta)=sin (180- 2 theta)=sin 2 thetatherefore angle for 2nd stone is 30 degreey1=u^2 sin ^2(60)/2g y2=u^2 sin ^2(30)/2gy2=y1/3 |
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