Calculate the distance in meters a cyclist would travel in 7 hrs. at an average velocity of 12 km/hr the southwest

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?