Projectile motion

Question 1

Q1: What is an elastic collision?

Answer 1

A1: An elastic collision is a collision where both momentum and kinetic energy are conserved. The colliding bodies rebound without any permanent deformation or heat generation.

Question 2

Q2: What is an inelastic collision?

Answer 2

A2: An inelastic collision is a collision where momentum is conserved, but kinetic energy is not. The colliding bodies may stick together or deform, converting some kinetic energy into internal energy (e.g., heat, sound).

Question 3

Q3: What are the key conservation laws in elastic collisions?

Answer 3

A3: In elastic collisions, both the law of conservation of momentum and the law of conservation of kinetic energy are satisfied.

Question 4

Q4: What happens to kinetic energy in an inelastic collision?

Answer 4

A4: In an inelastic collision, some kinetic energy is lost as heat, sound, or deformation energy, but the total momentum of the system is conserved.

Question 5

Q5: Can you provide examples of elastic and inelastic collisions?

Answer 5

A5: Elastic collision: A perfectly bouncy ball rebounding without losing energy.
Inelastic collision: A car crash where the vehicles crumple and stick together, losing kinetic energy as heat and sound.