1 / 11

Physics weds 10-31

Physics weds 10-31. Answer questions Type 3 problems Max Height. Challenge problem. A rude tourist throws a peach pit horizontally with 7.0 m/s velocity out of an elevator cage. The elevator is moving upward with a constant velocity of 8.5 m/s velocity.

tim
Download Presentation

Physics weds 10-31

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. Physics weds 10-31 Answer questions Type 3 problems Max Height

  2. Challenge problem • A rude tourist throws a peach pit horizontally with 7.0 m/s velocity out of an elevator cage. The elevator is moving upward with a constant velocity of 8.5 m/s velocity. • How long will it take the peach pit to land on the ground, 17.0 m below his initial position?

  3. Type 3 problems • Initial velocity at angle • Final position is not equal to start position (vertically) • Solve for time using quadratic formula or Solve for vertical final velocity first, then time

  4. Type 3 problems • Firefighters are using water from hose to put out a fire 13.5 m above the ground. The nozzle of the hose stands 0.75 m above the ground. • If the water comes out 44.5 m/s at 49° above the horizontal, how far away from the building should the firefighters stand?

  5. Steps to solutions • Determine the givens and fill them into the chart • Use trigonometry to find the initial velocities • Usually solve for the final vertical velocity’ • Then solve for time • Then solve for anything else needed

  6. Max height • Max height is the maximum vertical displacement for a projectile • Calculate the from the vertical position of launch to the point where the object no longer moves upward.

  7. Maximum height • Occurs at the apex of the arc. • The vertical velocity at that point is _____ • Calculate using the vertical information at the max height • Put a third column in chart • Title “max v” • The “d” in the max v column is the max height from surface • The time is NOT the same as time in the “H” or “V” column

  8. If object is shot off the cliff… • Add the height of cliff to max height to get the height of object above the ground

  9. Max height question set up • Angle _______ • Initial velocity ____ • Ledge of Cliff? _____ • Height ______

  10. A Halloween monster question • Create a question with a Halloween theme that centers on projectile motion. • Any type of projectile motion is allowable • The question must ask for 2 different unknowns (such as time and the Maximum height) • The numbers do not have to be realistic

More Related