HARD
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IMPORTANT
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A girl standing on road holds her umbrella at with the vertical to keep the rain away. If she starts running without umbrella with a speed of , the rain drops hit her head vertically. The speed of rain drops with respect to the moving girl is
(a)
(b)
(c)
(d)

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Important Questions on Kinematics
MEDIUM
JEE Main
IMPORTANT
When a ball is dropped into a lake from a height above the water level, it hits the water with a velocity and then sinks to the bottom with the constant velocity . It reaches the bottom of the lake after it is dropped. The approximate depth of the lake is

EASY
JEE Main
IMPORTANT
Motion of a particle in plane is described by a set of following equations and . The path of the particle will be

MEDIUM
JEE Main
IMPORTANT
A block of mass moving on a horizontal surface with speed of enters a rough surface ranging from to . The retarding force in this range of rough surface is related to distance by where . The speed of the block as it just crosses the rough surface will be

MEDIUM
JEE Main
IMPORTANT
A car covers distance with first one-third at velocity , second one-third at and last one-third at . If and , then the average velocity of the car is _____ .

MEDIUM
JEE Main
IMPORTANT
Two balls and are placed at the top of tall tower. Ball is released from the top at . Ball is thrown vertically down with an initial velocity at . After a certain time, both balls meet above the ground. Find the value of in . [use ]

EASY
JEE Main
IMPORTANT
Two vectors and have equal magnitudes. If magnitude of is equal to two times the magnitude of , then the angle between and will be

EASY
JEE Main
IMPORTANT
A small toy starts moving from the position of rest under a constant acceleration. If it travels a distance of in , the distance travelled by the toy in the next will be:

EASY
JEE Main
IMPORTANT
A person can throw a ball upto a maximum range of . How high above the ground he can throw the same ball?
