Newtons First Law
Newtons first law, known as the law of Inertia, states that an object at rest will stay at rest and an object in motion will stay in motion with the same speed and in the same direction, unless acted upon by an unbalanced force. This law can be applied to golf in several ways. For one, once the golf ball is hit off the tee, it would continue in the same direction with the same velocity until acted upon by an unbalanced force. In this case during a real game of golf, the unbalanced forces are the force of gravity and force of air (air resistance). Also, this law can be applied to the golf ball sitting on the golf tee. Hypothetically, the golf ball would stay on the tee forever until acted upon by an unbalanced force, in this case the force applied by the golf club.
Newtons Second Law
Newtons second law states that the net force is equal to the mass times the acceleration (Fnet=ma). When given the mass and acceleration, the Fnet can be found easily by multiplying the two. When given 2 of the 3 variables, the unknown variable can be found by rearranging the equation, or by using kinematic equations for finding the acceleration.
Newtons Third Law
Newtons third law states that for every force applied there is equal and opposite reaction force. This law can be applied to golf to a golf putt for example. If a player exerts an applied force of 1000 Newtons of force to the golf ball, the golf ball will apply and equal reaction force of 1000 Newtons onto the golf putter, causing the ball to start rolling.
Force of Friction
Although there is no air resistance or friction affecting the data I have collected, the force of friction acting on the ball can be calculated for when the ball makes contact with the fairway and the distance it continues to roll afterwards. This equation will show you the force and coefficient of friction acting on the ball after its projectile motion as it continues to roll for another 20 yards (18.3m)