A0.50 kg puck is sliding on a horizontal shuffleboard court is slowed to rest by a frictional force of 1.2 newtons. what is the coefficient of kinetic friction between the puck and the surface of the shuffleboard court?

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?