MEDIUM
JEE Main
IMPORTANT
Earn 100
A stone is projected vertically upwards at . The net displacement of stone is zero in the time interval between to . Select the correct statement(s).
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Important Questions on Motion in One Dimension
HARD
JEE Main
IMPORTANT
A person standing on the roof of a high tower, throws a ball vertically upwards with speed . Two seconds later, he throws another ball again in vertical direction (use ). Both the balls hit the ground simultaneously.
HARD
JEE Main
IMPORTANT
A balloon starts rising from the ground with an acceleration of . After , a stone is released from the balloon. After releasing, the stone will
EASY
JEE Main
IMPORTANT
A long train is moving in a direction with speed Train , moving with in the opposite direction and long, crosses the train in time
MEDIUM
JEE Main
IMPORTANT
A long train is moving due north at a speed of A small bird is flying due south, a little above the train, with a speed The time taken by the bird to cross the train will be
EASY
JEE Main
IMPORTANT
A police jeep is chasing a thief with velocity of a thief in another jeep is moving with velocity Police fires a bullet with muzzle velocity of The velocity with which it will strike the car of the thief is
MEDIUM
JEE Main
IMPORTANT
The distance between two particles is decreasing at the rate of If these particles travel with the same speeds and in the same direction, then the separation increases at the rate of . The particles have speeds as
MEDIUM
JEE Main
IMPORTANT
A boat moves with a speed of relative to water in a river, flowing with a speed of and having a width of . The minimum time taken around a round trip is
EASY
JEE Main
IMPORTANT
An express train is moving with a velocity . Its driver finds another train moving on the same track in the same direction with velocity . To escape collision, the driver applies a retardation on the train. The minimum time of escaping the collision will be
