During a new moon, is the moon a) in between earth and the sun b) in front of the sun, in back of earth c) in front of earth, in front of the sun d) alongside earth in front of the sun

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.)

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

Give one example to show that when substances are mixed, it may result in a chemical or a physical change depending on the conditions.