A mechanic uses a hydraulic lift to raise a car above her head. The car weighs 22,500N, and is raised by a piston with a 30cm diameter. What is the diameter of the smaller piston, if the force acting on it is 1500 N

What are the three ways that an object can accelerate

Name the non metal condut electricity

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.