What metric units are used to report the mass of an object

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

What determines the amount of inertia an object has

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?