The solar system formed when gravity began collapsing a cloud of gas, rock, ice, and other materials. Where did the gravity come from to initiate this collapse? Explain.

How is zig zagging a form of acceleration?

The energy released by a nuclear fusion reaction is produced when

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?