A marble rolls along the floor with a constant velocity of 6 m/s. How far will it have gone after 130 seconds

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° 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.)

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

Are formed where bumps from two surfaces come into contact ?