Recent questions tagged collisions

+1 vote

1 answer

If momentum is increased by 20% then K.E increases by (A) 44% (B) 55% (C) 66%

asked Apr 7, 2019 in JEE by kratos

+3 votes

1 answer

A bullet of mass m strikes a block of mass M. The bullet ******* embedded in the block.

asked Mar 31, 2019 in JEE by kratos

+3 votes

1 answer

In order to determine the coefficient of restitution e experimentally, a ball is dropped from height h0 onto a horizontal rigid surface

asked Mar 8, 2019 in JEE by kratos

+1 vote

1 answer

Two bodies of masses m and 4m are moving with equal linear momentum. The ratio of their kinetic energies is:

asked Mar 7, 2019 in Class 12 by kratos

+1 vote

1 answer

A Bullet of mass m is fired with a velocity ν onto a block of wood of mass M and initially at rest. The final velocity of the system will be

asked Feb 25, 2019 in Class 11 by kratos

+2 votes

1 answer

If a body losses half of its velocity on penetrating 3 cm in a wooden block, then how much will it penetrate more before coming to rest ?

asked Feb 24, 2019 in JEE by kratos

+3 votes

1 answer

A force vector F=(7 – 2x + 3x^2) N is applied on 2 kg mass which displaces it from x = 0 to x = 5m.

asked Feb 24, 2019 in JEE by kratos

+1 vote

1 answer

A rifle bullet loses 1/20th of its velocity in passing through a plank. The least no. of such planks required to stop bullet:

asked Feb 24, 2019 in JEE by kratos

+3 votes

1 answer

A body of mass 2 kg is thrown up vertically with kinetic energy of 490 J.

asked Feb 10, 2019 in Class 11 by kratos

+1 vote

1 answer

A particle of mass m moving with velocity Vo strikes a simple pendulum of mass m and sticks to it . The max. ht

asked Feb 4, 2019 in JEE by kratos

+1 vote

1 answer

If a body of mass 200 g falls from a height 200 m and its total P.E is converted into K.E. at the point of contact of the body

asked Feb 4, 2019 in Class 11 by kratos

+1 vote

1 answer

A ball is dropped from the height h1 and if rebounces to a height h2. Find the value of coefficient of restitution?

asked Jan 31, 2019 in Class 12 by kratos

+2 votes

1 answer

A bullet of mass 10 g leaves a rifle at an initial velocity of 1000 m/* and strikes

asked Jan 19, 2019 in Class 12 by kratos

+1 vote

1 answer

A metal ball of mass 2 kg moving with speed of 36 km/h has a head on collision with a stationary ball of mass 3 kg.

asked Jan 19, 2019 in Class 12 by kratos

+1 vote

1 answer

The kinetic energy acquired by a mass m in travelling a certain distance d, starting from rest, under the action of a constant force is directly

asked Jan 5, 2019 in Class 11 by kratos

+3 votes

1 answer

A bullet of mass a and velocity b is fired into a large block of mass c, the final velocity of the system is

asked Jan 4, 2019 in Class 11 by kratos

+2 votes

1 answer

A bullet of mass 20 g has an initial speed of 1 ms^–1 , just before it starts penetrating a mud wall of thickness 20 cm.

asked Jan 2, 2019 in JEE by kratos

+2 votes

1 answer

The initial speed of a bullet fired from a rifle is 630 m/*. The rifle is fired at the centre of a target 700 m away at the same level as the target.

asked Jan 1, 2019 in JEE by kratos

+1 vote

1 answer

If a body looses half of its velocity on penetrating 3 cm in a wooden block, then how much will it penetrate more before coming to rest?

asked Dec 29, 2018 in JEE by kratos

+2 votes

1 answer

A ball is dropped from height 10. Ball in embedded in sand 1m and stops. (A) Only momentum ******* conserved.

asked Dec 20, 2018 in Class 11 by kratos

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