1. The reason that the moon maintains a constant altitude circular orbit around the earth and does not fall and hit the earth is A. There is no gravity in space B. The moon has a large orbital speed. C. The other planet and sun holds up the moon. D. The moon has less mass than earth. Question 2. A large truck breaks down out on the road and receives a push back into town by a small compact car. While the car still pushing the truck is speeding up to get up to cruising speed, how does the force exerted on the truck by the car compare to the force exerted on the car by the truck? Explain using the most appropriate newtons laws