Is it accurate to describe the physical universe as composed of only matter and energy? plz explain , many !

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

The amount of potential energy possessed by an elevated object is equal to what?

A6.0-kilogram cart initially traveling at 4.0 meters per second east accelerates uniformly at 0.50 meter per second squared east for 3.0 seconds. what is the speed of the cart at the end of this 3.0 second interval? (1) 1.5 m/s (3) 3.0 m/s (2) 5.5 m/s (4) 7.0 m/s