A 1,000,000 kg train is moving at a constant velocity. If engines are cut and it is allowed to coast up a 20 m tall hill. How fast must it be going in order to reach the top of the hill?

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.