Question

is a football tackle an elastic or inelastic collision and why? (1 point)
o inelastic, because kinetic energy is conserved
o elastic, because momentum is conserved
o inelastic, because kinetic energy is not conserved
o inelastic, because momentum is not conserved

Explanation:

In an inelastic collision, the objects stick together after the collision. Kinetic energy is not conserved in inelastic collisions (some energy is lost as heat, sound, etc.), while momentum is conserved in all collisions (assuming no external forces). In a football tackle, the players stick together (or at least move together after the tackle), so it's an inelastic collision. The key is that kinetic energy is not conserved.

Answer:

inelastice, because kinetic energy is not conserved