Aball is dropped from rest from the top of a building. what force is responsible for the downward motion of the ball?

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .