2. What is the weight of an object if 75 J of
work is done to lift it uniformly 6.0 m?

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.)

Asher cycles 12 miles in 16 hours. what is his speed?

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes