A stone, Q is thrown with velocity U at an angle of 75o to the horizontal. Another stone R is thrown with the same velocity U but with an angle of 15o to the horizontal. The ranges covered by the stones will be
-
A.
greater for Q -
B.
greater for R -
C.
the same for Q and R -
D.
greater for the heavier of the two stones
Correct Answer: Option C
Explanation
Range = (frac{U^2sin2theta}{g})
RangeQ = (frac{U^2sin150}{g})
RangeR = (frac{U^2sin30}{g})
Since, sin30o = sin150o
therefore, RQ = RR