1
NEET 2020 Phase 1
+4
-1
A ball is thrown vertically downward with a velocity of 20 m/s from the top of a tower. It hits the ground after some time with a velocity of 80 m/s. The height of the tower is : (g = 10 m/s2)
A
340 m
B
320 m
C
300 m
D
360 m
2
NEET 2019
+4
-1
The speed of a swimmer in still water is 20 m/s. The speed of river water is 10 m/s and is flowing due east. If he is standing on the south bank and wishes to cross the river along the shortest path, the angle at which he should make his strokes w.r.t. north is given by :
A
0o
B
60
C
45o west
D
30o west
3
NEET 2017
+4
-1
Preeti reached the metro station and found that the escalator was not working. She walked up the sationary escalator in time t1. On another days, if she remains stationary on the the moving escalator, then the escalator takes her up in time t2. The time taken by her to walk up on the moving escalator will be
A
$${{{t_1}{t_2}} \over {{t_2} - {t_1}}}$$
B
$${{{t_1}{t_2}} \over {{t_2} + {t_1}}}$$
C
$${{t_1} - {t_2}}$$
D
$${{{t_1} + {t_2}} \over 2}$$
4
NEET 2016 Phase 2
+4
-1
Two cars P and Q start from a point at the same time in a straight line and their positions are represented by
xP(t) = (at + bt2) and xQ(t) = (ft $$-$$ t2).

At what time do the cars have the same velocity ?
A
$${{a - f} \over {1 + b}}$$
B
$${{a + f} \over {2\left( {b - 1} \right)}}$$
C
$${{a + f} \over {2\left( {1 + b} \right)}}$$
D
$${{f - a} \over {2\left( {1 + b} \right)}}$$
EXAM MAP
Medical
NEET