Conduction is usually faster/slower in liquids and certain solids than in gases.
materials that are good conductors of thermal energy are
metals are excellent/poor thermal conductors.
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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.)