Two projectiles A and B are thrown with initial velocities of 40 m s -1 and 60 m s -1 at angles 30° and 60° with the horizontal respectively. The ratio of their ranges respectively is (g = 10 m s -2 )
A
4 : 9
B
2 : 
C
: 2
D
1 : 1
Text Solution
Verified by ExpertsThe correct answer is:
A
The range (R 1 ) of the first projectile is given by
...
The range (R 2 ) of the second projectile is given by
...
Divide equation by equation and simplify to obtain the ratio of the ranges.
…
Substitute the values of the known parameters into equation to calculate the required ratio.
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