Why does the space station stay in orbit and not just fall to Earth? A.
Objects in space are weightless
B.
The gravitational force is so weak that it has no effect on the orbit.
C.
It has enough forward velocity to fall around the earth
D.
The atmosphere prevents objects from falling down

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

Where do magnetic lines of force enter earth?