Physics
JAMB 1992
A stone, Q is thrown with velocity U at an angle of 75
o to the horizontal. Another stone R is thrown with the same velocity U but with an angle of 15
o 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 = \(\frac{U^2sin2\theta}{g}\)
RangeQ = \(\frac{U^2sin150}{g}\)
RangeR = \(\frac{U^2sin30}{g}\)
Since, sin30o = sin150o
therefore, RQ = RR
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