Momentum Collisions Physics Mr Creery Conservation of Momentum

Conservation of Momentum p = m* v No external forces • Initial momentum =

Collisions • When two objects collide the momentum is conserved. • Three categories of

Conservation of Momentum Example Problem Write and rearrange formula Identify Givens p+p=p+p Find piano’s

Elastic Collisions Example Problem Identify Givens Write and rearrange formula Plug in variables and

Inelastic Collisions Example Problem Identify Givens Write and rearrange formula Plug in variables and

Summary Collisions • When two objects collide the momentum is conserved. • Three categories

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Momentum Collisions Physics Mr. Creery

Conservation of Momentum p = m* v No external forces • Initial momentum = final momentum • mvi 1+mvi 2 = mvf 1+mvf 2 p+p=p+p

Collisions • When two objects collide the momentum is conserved. • Three categories of collisions Elastic Kinetic Energy is conserved Momentum is conserved Two objects completely separate. There is no change in shape. Example: Billiard Balls Inelastic One object changes shape and they Separate after the collision Example: A tennis ball Kinetic Energy is not conserved Momentum is conserved Perfectly Inelastic Kinetic Energy is not conserved Momentum is conserved The objects stick together after the collision Example: An arrow shot through an apple.

Conservation of Momentum Example Problem Write and rearrange formula Identify Givens p+p=p+p Find piano’s velocity 0 + 0 = mv 1 f + mv 2 f Plug in variables and solve

Elastic Collisions Example Problem Identify Givens Write and rearrange formula Plug in variables and solve

Inelastic Collisions Example Problem Identify Givens Write and rearrange formula Plug in variables and solve

Summary Collisions • When two objects collide the momentum is conserved. • Three categories of collisions Elastic Kinetic Energy is conserved Momentum is conserved Two objects completely separate. There is no change in shape. Example: Billiard Balls Inelastic Kinetic Energy is not conserved Momentum is conserved Perfectly Inelastic Kinetic Energy is not conserved Momentum is conserved One object changes shape and they Separate after the collision Example: A tennis ball The objects stick together after the collision Example: An arrow shot through an apple.