Which of the following is a fundamental unit of the SI system of units? A) kilometer
B) joule
C) kilogram
D) gram
E) newton

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 .

Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency

What practical value did astronomy offer to ancient civilizations?