Q1.The density of the tightly compressed sugar cube is about 1.4 1.4g/ml. If a sugar cube weighs very close to 5 grams, what is volume of the cube?
Q2. A swimming pool has dimensions 24.0m x 13.0 m and a flat bottom. When the pool is filled to a depth of 1.50m with fresh water, what is force caused by the water on the bottom? On each end? (Ends are 13.0m) On each side? (Sides are 24.0m)
Q3. A child bounces a 52 g superball on the sidewalk. The velocity change of the superball is from 21 m/s downward to 11 m/s upward.If the contact time with the sidewalk is 1/800s, what is the magnitude of an average force exerted on the superball by the sidewalk?
Respond in units of N.