PA pg 63: Work Problems

Last updated over 1 year ago

3 questions

Instructions

These are the formulas you will need to solve the following problems.  Show your work and include a sketch of each problem on page 63 of your notebook.  

Suppose a 350-g kookaburra (a large kingfisher bird) picks up a 75-g snake and raises it 2.5 m from the ground to a branch. How much work did the bird do on the snake?

The brakes of a truck cause it to slow down by applying a retarding force of 3000 N to the truck over a distance of 850 m. What is the work done by this force on the truck?

A 75.0-kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to the floor above, a vertical height of 4.60 m. What is the work done on the man by the escalator?