Warm up. Physics Honors AB –Day 1/12/15-1/13/15 Momentum and Impulse.

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Presentation transcript:

Warm up

Physics Honors AB –Day 1/12/15-1/13/15 Momentum and Impulse

Agenda Review Conservation of Momentum Conservation of Energy Collisions – Elastic and Inelastic

Potential Energy

Kinetic Energy

Mechanical Energy

Momentum

Impulse

Conservation of Momentum

A 63 kg astronaut is in space and throws a 10 kg oxygen tank towards Earth with a speed of 12.0 m/s. Assuming the astronaut starts from rest, find the final velocity of the astronaut after the throw.

Conservation of Momentum in Space Linear Momentum in Space

Collisions

Elastic Collision A 16 kg canoe moving to the left at 12 m/s makes an elastic head- on-collision with a 4.0 kg raft moving to the right at 6.0 m/s. After the collision, the raft moves to the left at 22.7 m/s. Disregard any water effects. Find the velocity of the second ball after the collision.

Inelastic Collisions A 1500 kg traveling at 15 m/s to the south collides with a 4500 kg truck that is initially at rest. The car and truck stick together and move together after the collisions. What is the final velocity of the two vehicle mass?

Car Crash Video Physics of Car Crash