1 / 4

W = F*d W = -F*d W = 0 W = F*v W = - F*v

A car traveling to the right with a speed v brakes to a stop in a distance d. What is the work done on the car by the frictional force F? (Assume that the frictional force is constant). W = F*d W = -F*d W = 0 W = F*v W = - F*v. v. d. F.

adair
Download Presentation

W = F*d W = -F*d W = 0 W = F*v W = - F*v

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. A car traveling to the right with a speed v brakes to a stop in a distance d. What is the work done on the car by the frictional force F? (Assume that the frictional force is constant). W = F*d W = -F*d W = 0 W = F*v W = - F*v v d F

  2. A car travels with a constant velocity v for a distance d up a hill that makes an angle q with respect to the horizontal. What is the work done by the sum of the gravitational force plus the constant upward frictional force F that the hill exerts on the tires of the car? W = (mgsinq)d W = -(mgsinq)d W = 0 W = Fd W = -Fd v q

  3. A satellite travels with a constant speed |v| as it moves around a circle centered on the earth. How much work is done by the gravitational force F on the satellite after it travels half way around the earth in time t? Cannot be determined W = 0 W = F * |v|t W = -F * |v|t v

  4. The engine of a 1000 kg sports car rotates the tires, creating a forward pushing force F on the tires of the car that varies as a function of distance. The force is shown below. If the car starts at rest, what is the speed of the car after traveling 500 meters? 0 m/s 71 m/s 100 m/s 141 m/s 200 m/s Force distance 0 500 m

More Related