1. What are the relationships between forces and motion? 
2. What are the variables that affect motion and force? 
3. How does Newton’s three laws describe the motion of a moving 
object? 
4. How does gravity impact objects?

1. Force is described as pressure that is applied. And motion is a certain movement, and it is usually the result of the force, or simply the energy given from the force. These to things work together on moving an object and both rely on each other so they can move an object. Without a force acting on the object the object would not be able to change its speed or direction. 
2.  There are many variables that affect motion and force and Friction is one of them. The force Friction is what slows down the motion of the object. Objects at rest have inertia, but when the object is in motion it has momentum and inertia. Momentum is the product of the mass and velocity of an object.Momentum is changed by how fast and object is moving and how much mass that object has. An example is a soccer ball being kicked. If the ball is kicked with a large force it goes faster, and the ball moves more quick. However, if the ball is kicked gently, then the ball moves slowly. The direction in which the ball moves is based on the direction of the foot when the ball is struct. 
3. The three laws describe the relationship between an object  and the forces acting upon it. The first laws says that an object either remains at rest or continues to move at a velocity unless acted upon by an external force. The second law is when an object is equal to the mass of that object multiplied by the acceleration of the object. 
4. One thing gravity affects is our weight for example, on the moon you would less because the moon has less gravitational force. Where as on earth we weigh more because it has more gravitational force.