An alien has a mass of 50 kg. What would he weight on earth?

If a balloon is taken outside on a very cold day, what will occur?

Explain what happens at the saturation point when adding salt to water at room temperature.

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)