FAQs on Problems L 6 ,collisions ,class 11, physics

Question 1

1. What is a collision in physics?

Accepted Answer

Ans. In physics, a collision refers to an event where two or more objects interact with each other, resulting in a change in their momentum and energy. Collisions can be classified as either elastic or inelastic, depending on whether kinetic energy is conserved during the interaction.

Question 2

2. How is momentum conserved in a collision?

Accepted Answer

Ans. Momentum is conserved in a collision as per the law of conservation of momentum, which states that the total momentum of a closed system remains constant before and after the collision. This means that the sum of the momenta of all objects involved in the collision remains the same, even if the objects experience changes in their individual momenta.

Question 3

3. What is an elastic collision?

Accepted Answer

Ans. An elastic collision is a type of collision where both momentum and kinetic energy are conserved. In an elastic collision, the total kinetic energy of the system before the collision is equal to the total kinetic energy after the collision. This implies that no energy is lost or gained during the collision.

Question 4

4. How is an inelastic collision different from an elastic collision?

Accepted Answer

Ans. In an inelastic collision, kinetic energy is not conserved, unlike in an elastic collision. During an inelastic collision, some of the initial kinetic energy is transformed into other forms of energy, such as heat, sound, or deformation. This means that the total kinetic energy of the system after the collision is less than the total kinetic energy before the collision.

Question 5

5. What factors determine whether a collision is elastic or inelastic?

Accepted Answer

Ans. The elasticity of a collision is determined by the nature of the interaction between the colliding objects and the conservation of kinetic energy. If the objects do not deform or dissipate energy during the collision, it is likely to be an elastic collision. On the other hand, if the objects deform or dissipate energy, such as through friction or deformation, the collision is considered to be inelastic.

Problems L 6 ,collisions ,class 11, physics

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