Two balls collide inelastically. What is conserved?
Correct answer: D. Momentum
- A. Kinetic energy (K.E)
- B. Temperature
- C. Velocity
- D. Momentum
Explanation
In an inelastic collision, kinetic energy is not conserved due to the loss of energy in the form of deformation, heat, etc. However, momentum is always conserved in collisions, both elastic and inelastic.Incorrect Options Explanation:(a) Kinetic energy (K.E): Kinetic energy is not conserved in inelastic collisions.(b) Temperature: Temperature is not typically conserved in collisions and is not a fundamental quantity of motion conservation.(c) Velocity: While velocity may change during the collision, it is not conserved as a separate physical quantity.
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About Force and Motion
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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