A drag racer starts her car from rest and accelerates at 8.6 m/s² for the entire distance

of 639 m.

How long did it take the car to travel this

distance?

Answer in units of s.

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.