How far can light travel in "the blink of an eye"? (1/3s)

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

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 .