Let's say the comet is initially some distance away from the Sun. At a later time, the distance is one-half the initial distance. How does the final force relate to the initial force? The final force is two times the initial force. The final force is one-fourth times the initial force. The final force is half times the initial force. The final force is four times the initial force.A spacecraft is moving toward a small asteroid in outer space. At time t1, the spacecraft is 300,000 m from the asteroid. At time t2, the spacecraft is 100,000 m (one-third of the initial distance). How does the gravitational force on the spacecraft due to the asteroid at time t2 compare to the force at time t1? The force at t2 is three times the force at t1. The force at t2 is one-third the force at t1. The force at t2 is one-ninth the force at t1. The force at t2 is nine times the force at t1