An object is 2.5 kgs and is traveling at a speed of 4.0 m/s. What is the objects momentum?

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.)

The movement of electrons between atoms is called an

What is the quantity which is measured by the area occupied below the velocity- time graph?