What is the work done by the friction when the body slides against a rough horizontal surfaces? A)positive
B)negative
C)zero
D)infinity

If y gets smaller as x gets bigger and y have an relationship?

Select the correct answer. what does the process of natural selection involve?

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 .