1
AIEEE 2004
+4
-1
A ball is released from the top of a tower of height h meters. It takes T seconds to reach the ground. What is the position of the ball in $${T \over 3}$$ seconds?
A
$${{8h} \over 9}$$ meters from the ground
B
$${{7h} \over 9}$$ meters from the ground
C
$${h \over 9}$$ meters from the ground
D
$${{7h} \over {18}}$$ meters from the ground
2
AIEEE 2004
+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
$${R^2}$$
3
AIEEE 2004
+4
-1
An automobile travelling with speed of 60 km/h, can brake to stop within a distance of 20 m. If the car is going twice as fast, i.e 120 km/h, the stopping distance will be
A
60 m
B
40 m
C
20 m
D
80 m
4
AIEEE 2004
+4
-1
A ball is thrown from a point with a speed ν0 at an angle of projection θ. From the same point and at the same instant person starts running with a constant speed $${{{v_0}} \over 2}$$ to catch the ball. Will the person be able to catch the ball? If yes, what should be the angle of projection θ?
A
No
B
Yes, $$30^\circ$$
C
Yes, $$60^\circ$$
D
Yes, $$45^\circ$$
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