1
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
A projectile can have the same range 'R' for two angles of projection. If T1 and T2 be the time of flights in the two cases, then the product of the two time of flights is directly proportional to
A
R
B
$${1 \over R}$$
C
$${1 \over {{R^2}}}$$
D
$${R^2}$$
2
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
A boy playing on the roof of a 10 m high building throws a ball with a speed of 10 m/s at an angle of $$30^\circ $$ with the horizontal. How far from the throwing point will the ball be at the height of 10 m from the ground? $$\left[ {g = 10m/{s^2},\sin 30^\circ = {1 \over 2},\cos 30^\circ = {{\sqrt 3 } \over 2}} \right]$$
A
5.20 m
B
4.33 m
C
2.60 m
D
8.66 m

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