How is acceleration related to force when mass is constant , according to Newton’s second law of motion

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

The heliocentric and the geocentric models of the solar system included these central principles

A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.