What is an isolated system? A. The forces that act upon an object in a collision
B. The intergalactic highway system
C. The system in which collisions always occur
D. A collection of matter that does not interact with anything else in
the universe

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 .

Group of elements with the same number of valence electrons

An elevator is initially moving upward at a speed of 12.60 m/s. the elevator experiences a constant downward acceleration of magnitude 3.60 m/s2 for 2.97 s.