Forces and Newton's Laws Notes (extra)

A Force is a push or a pull. Examples of forces can be pushing a box or gravity pulling on a thrown baseball.

Formula Force= Mass * Acceleration

Units:
Force-Newtons Mass- kilograms Acceleration- meters/second square
Newton- kg* m/s squared

Example: A box is pushed across a floor with an acceleration of 3 m/s squared. The box has a mass of 20 kg. Find the force the box is pushed

F=ma
F=(20 kg) (3 m/s squared)
F= 60 N

Newton's Laws

Law 1: An object which is moving or at a state of rest does not change its state of motion unless a force acts on it.

Law 2: a=m/F

Law 3: For every force, there is an equal and opposite force.


More Problems

1. Ryan hit a baseball with an acceleration of 30 meters per second squared. The mass of the baseball is 0.5 kg. What was the force?

2. How much force is required to give an object with a mass of 22 kg an acceleration of 12 m/s squared?

3. How much force is required to give a 5000 kg crate an acceleration of 2 m/s squared on an icy surface without friction?

4. A 2,200 kg car accelerates at the rate of 2.6 m/s squared. How much force is required to achieve this acceleration?


These notes will supplement what we will be covering next week in class.