What two factors cause planets and stars to be roughly spherical? A. They're not really at all spherical.
B. Radial gravitational attraction, and the spin speed increasing over time.
C. Radial gravitational attraction, and gas pressure.
D. Radial gravitational attraction, and magnetic forces.

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2

e/c, where e is its total energy

the force represented by vector a is normal force. if the hockey puck is moving to the right, when it is hit with a significant force by the hockey stick the puck will move off in a different direction. correct on edge.