HARD
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IMPORTANT
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A juggler throws balls vertically upwards with same initial velocity in air. When the first ball reaches its highest position, he throws the next ball. Assuming the juggler throws n balls per second, the maximum height the balls can reach is

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Important Questions on Kinematics

HARD
JEE Main
IMPORTANT
A ball is released from a height h. If t1 and t2 be the time required to complete first half and second half of the distance respectively. Then, choose the correct relation between t1 and t2.
MEDIUM
JEE Main
IMPORTANT
The maximum vertical height to which a man can throw a ball is 136 m. The maximum horizontal distance upto which he can throw the same ball is
EASY
JEE Main
IMPORTANT
If two vectors P=i^+2mj^+mk^  and Q=4i^-2j^+mk^  are perpendicular to each other. Then, the value of m will be 
EASY
JEE Main
IMPORTANT
A car travels a distance of x with speed v1 and then same distance x with speed v2 in the same direction. The average speed of the car is:
EASY
JEE Main
IMPORTANT
The distance travelled by a particle is related to time t as x = 4t2. The velocity of the particle at t = 5 s is
EASY
JEE Main
IMPORTANT
Two objects are projected with same velocity u however at different angles α and β with the horizontal. If α +β= 90°, the ratio of horizontal range of the first object to the 2nd object will be :
EASY
JEE Main
IMPORTANT
A stone is projected at angle 30° to the horizontal. The ratio of kinetic energy of the stone at point of projection to its kinetic energy at the highest point of flight will be :
EASY
JEE Main
IMPORTANT
A tennis ball is dropped on to the floor from a height of 9.8 m. It rebounds to a height 5.0 m. Ball comes in contact with the floor for 0.2 s. The average acceleration during contact is ______ m s-2. [Given g=10 m s-2]