The most dense asteroid

What are atoms of the same element with varying number of neutrons

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

According to newton’s law of universal gravitation, which statements are true? as we move to higher altitudes, the force of gravity on us decreases. as we move to higher altitudes, the force of gravity on us increases. as we gain mass, the force of gravity on us decreases. as we gain mass, the force of gravity on us increases. as we move faster, the force of gravity on us increases.