Newton's 2nd Law
by: Kevin Alvarez
What is it about?
The acceleration of a body is directly proportional to, and in the same direction as, the net force acting on the body, and inversely proportional to its mass. Thus, F = ma, where F is the net force acting on the object, m is the mass of the object and a is the acceleration of the object.
If a train hits another train of equal force and speed, they will both go the same distance and feel the same force.