An astronomical unit is _____.
the mass of the Sun
10 light-years
the distance from Earth to the Sun
the diameter of the earth
According to Newton's 3rd law of motion, if you hit a baseball with a bat it will _____.
hurt your hand from the reaction force
accelerate according to the applied force
fly in a straight line unless an outside force changes its course
fall to the ground because of gravitational pull
The pull of the moon on Earth's tidal bulge is causing _____.
the earth to gradually rotate faster
the earth to slowly expand in size
the earth to rotate slightly slower
the moon to move closer to Earth