A runner begins a race from the starting line and accelerates to a speed of 9.8 m/s. If it takes the runner 12.8 seconds to reach his maximum speed, what was his acceleration?

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.