The law of original horizontality suggests that rock strata are always layered in a horizontal plane. if rock strata are tilted in some way, a geologic map shows the tilted rock with
fault line symbols
fold axis symbols
strike-and-dip symbols
letter symbols

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.)