Newton's 2nd law is where Force (F) equals mass (m) times acceleration (a),
as described by the equation:

F = m * a

This law of physics can be related to many sporting situations. If you wish to calculate the force applied to an object, and you know what the acceleration and mass of the object you can use the above formula. If you know the force and the mass of the object, you can calculate the acceleration using:

a = F / m