18. A man weighing 1000 N runs up some stairs. rising a vertical height of 5 m in 10 seconds.
a) What power does he develop?

The midpoints? a, b, and c are marked on the histogram. match them to the indicated scores. which? scores, if? any, would be considered? unusual?

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

Which sections of the heating curve illustrate this process?