Analysis

A. Newton's first law of motion states that an object at rest will remain at rest and an object that is moving at a constant velocity will continue moving at a constant velocity unless acted upon by an unbalanced force. Our balloon car followed Newton's first law. Before the balloon was released, the car was at rest; it was not in motion. The balloon car did not move until it was acted upon an unbalanced force. In this case, it was the balloon letting out air. When the balloon let the air out, it propelled the car across the floor. If no other forces acted on the balloon car, the car would have kept going forever. However, friction between the wheels and the floor was acting on the car. This causes the balloon car to eventually come to a stop.
B. The mass of the balloon car greatly affects its acceleration at the start. Newtons second law of motion states that the acceleration of an object is equal to the ammount of net force acting upon it divided by the mass of the object.  The less mass the car has, the faster it will accelerate. The more mass the car has, the slower it will accelerate.
C. Momentum is the product of an object's mass and velocity. The more momentum an object has, the harder it is to stop. This means that objects with more momentum have a higher inertia, or a higher tandancy to resist change in motion. The more mass and velocity an object has, the more momentum it has. If the momentum of the balloon car is very great, the car will continue to move even after the balloon has deflated. Of course, friction is acting on the car, so the balloon car will eventually stop. If the balloon car has little momentum, it will not continue to move much further after the balloon had deflated. This is because the momentum is not strong enough to keep the car moving.
D. Newton's third law of motion in its simplest form is: for every action there is an equal and opposite reaction. This law applied to our balloon car as it does for everything on the planet. The first object is the balloon which caused the car, the second object, to move forward by the air pushing out and back. The force relates to Newton's first law of motion, (an object at rest will remain at rest and an object that is moving at a constant velocity will continue moving at a constant velocity unless acted upon by an unbalanced force), because the force that is being acted on the balloon car is the air bing pushed out of the balloon.
E. The three different types of friction are sliding friction, rolling friction, and fluid friction, all of which were involved with our balloon car. Sliding friction was used between the axle and the wheel, so we had to make sure there was as little friction as possible. Rolling friction was used between the wheels and the floor, so we had to make sure the wheels were smooth enough to keep rolling. Finally fluid friction was used from the air com in out of the balloon so we had to make sure there was enough air coming out to create a strong enough force for the car to move.