The motion of a car on a position-time graph is represented with a horizontal line. what does this indicate about the car's motion?
a. it's not moving.
b. it's moving at a constant speed.
c. it's moving at a constant velocity.
d. it's speeding up.

The arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s . 1.) a. precipitation b. water vapor c. icy debris 2.) a. gravitational compression b. biochemical cycling c. radiogenic heating 3.) a, gravity b. magnetic field c. heat energy for plato