Exams › NEET › Physics

Which of the following statements is true for collisions?

1. Momentum is conserved in elastic collisions but not in inelastic collisions
2. Total kinetic energy is conserved in elastic collisions but momentum is not conserved
3. Total kinetic energy is not conserved in inelastic collisions but momentum is conserved
4. Total kinetic energy and momentum both are conserved in all types of collisions

Correct answer: Total kinetic energy is not conserved in inelastic collisions but momentum is conserved

Solution

For collisions in an isolated system, total momentum is conserved regardless of whether the collision is elastic or inelastic. Total kinetic energy is conserved only in elastic collisions, not in inelastic collisions. Hence the correct statement is that kinetic energy is not conserved in inelastic collisions but momentum is conserved.

Related NEET Physics questions

• A uniform rod is resting freely over a smooth horizontal plane. A particle moving horizontally strikes at one end of the rod normally and gets stuck. Then This question has multiple correct options
• The dimensional formula of torque is
• The moment of the force, F = 4i + 5j - 6k at (2, 0, -3), about the point (2, -2, -2), is given by
• An object flying in air with velocity (20i + 25j − 12k) suddenly breaks into two pieces whose masses are in the ratio 1: 5. The smaller mass flies off with a velocity (100i + 35j + 8k). The velocity of the larger piece will be
• At maximum compression, the solid cylinder will stop so loss in kinetic energy of the cylinder equals gain in potential energy of the spring. What is the expression for the energy?
• Two persons of masses 55 kg and 65 kg respectively, are at the opposite ends of a boat. The length of the boat is 3.0 m and weighs 100 kg. The 55 kg man walks up to the 65 kg man and sits with him. If the boat is in still water the centre of mass of the system shifts by:

⚔️ Practice NEET Physics free + battle 1v1 →