The second law states that the rate of change of momentum of a body is directly proportional to the force applied, and this change in momentum takes place in the direction of the applied force.
111111(快乐老家)
What is difference between them? Which one is original definition ? Why are there two different definitions OR statements ? Thank you.
(#11756170@0) Last Updated: 2018-10-21 This post has been archived. It cannot be replied.
In an inertial reference frame,
-sailor(Ocean & Mountain);
2018-10-21{255}(#11756093@0)
the vector sum of the forces F on an object is equal to the mass m of that object multiplied by the acceleration a of the object: F = ma. (It is assumed here that the mass m is constant – see below.)
https://en.wikipedia.org/wiki/Newton's_laws_of_motion
The second law states that the rate of change of momentum of a body is directly proportional to the force applied, and this change in momentum takes place in the direction of the applied force.
-111111(快乐老家);
2018-10-21{134}(#11756170@0)
What is difference between them? Which one is original definition ? Why are there two different definitions OR statements ? Thank you.
What you said is an implication of F=ma.
-sailor(Ocean & Mountain);
2018-10-21(#11756176@0)
You are right. However, the Momentum is the Key.
-111111(快乐老家);
2018-10-21(#11756255@0)