Three-year-old Ben and his father are playing with a ball at the park. Ben's father throws a
ball high up into the air. Ben thinks the ball will never come back. His father assures him that
the ball will always come back. What made Ben's father so sure that the ball would fall back
to Earth?

His dad knows about gravity and, unless gravity was not working, anything with mass will be pulled back to earth

Explanation:

:)

gravity

Explanation:

Newton's first law of motion is often stated as. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

im not exactly sure but i think its b!