Which of the following is an example of kinetic energy being converted to potential energy?
a. on a factory assembly line, boxes slide down a ramp.
b. at an ice rink, an ice skater gives another ice skater a gentle push.
c. the cord of a bow-and-arrow is released, propelling the arrow forward. d. bike rider stops pedaling and lets his bicycle coast up a hill.

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?

How is zig zagging a form of acceleration?