1 / 8

Chapter 3: Momentum and Energy

Chapter 3: Momentum and Energy. 3.1 Momentum 3.2 Impulse 3.3 Impulse-Momentum 3.4 Conservation of Momentum 3.5 Energy. 3.1 Momentum. Is it easier to stop a heavy truck or a small Car moving at the same speed? Why? Momentum: inertia in motion. Momentum = mass x velocity. 3.2 Impulse.

ehartman
Download Presentation

Chapter 3: Momentum and Energy

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 3: Momentum and Energy 3.1 Momentum 3.2 Impulse 3.3 Impulse-Momentum 3.4 Conservation of Momentum 3.5 Energy

  2. 3.1 Momentum • Is it easier to stop a heavy truck or a small • Car moving at the same speed? Why? • Momentum: inertia in motion. • Momentum = mass x velocity

  3. 3.2 Impulse • Change in momentum: 1. change in mass 2. change in velocity 3. change in both • If it is because of change in velocity, then there is acceleration • If there is acceleration then there is a force • The greater the change in force the greater the change in momentum • Time is also important: apply a force for a long time, you produce more change in momentum • Impulse = force x time interval

  4. 3.3 Impulse-Momentum Relationship • The greater the impulse exerted on an object, the greater will be its change in momentum • Impulse = change in momentum • Ft = change in (mv) • *in addition to acceleration Case 1: Increasing momentum cannons with large barrels. force on a golf ball and distortion

  5. Case 2: Decreasing momentum over a long time • Decrease in momentum is same • The impulse required to stop is same • But force is not the same, damage is not the same

  6. Case 3: Decreasing the momentum over a short time • Impact forces are large • Bouncing

  7. 3.4 Conservation of Momentum • Internal forces cancel

More Related