Question1
A person lifts a 3.60 kg textbook with a 52.0 N force at a 60 degree angle from the horizontal. Sketch a free-body diagram of the forces acting on the book, ignoring air resistance.
Question2
A bottle has a mass of 29.40g when empty and 93.14g when filled with water. While filled with another fluid, the mass is 84.72g .What is specific gravity of this other fluid?
Question3
A ball is dropped from the top of a 55.0 -high cliff. At the equal time, a carefully aimed stone is thrown straight up from the bottom of the cliff with a speed of 27.0. The stone and ball collide part way up. How far above base of cliff does this happen?