Which scenario involves kinetic energy transforming into potential energy? a. a book lying on a shelf b. a train traveling at a constant speed c. a person drawing back the string of a bow and arrow d. a ball beginning to descend after being thrown upward

Mike walks 100 meter north, then walks 30 meters south. after this, he walks another 10 meters north. what is the magnitude of his total displacement during this walk,in meters?

How would a small bar magnet be oriented when placed at position x?

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?