Newtons Laws of Motion
By: Jordyn Todd
Newtons First Law: Inertia
The tendency of an abject to resist a change in motion. The greater an objects mass, the greater its inertia. Because of inertia, an object will keep doing what it is doing unless forces become unbalanced.
Vehicle restraints, such as search belts, are the the unbalanced force that stops you when a car stops suddenly so that you don't go flying out of the car.
If pulled quickly, a tablecloth can be removed from underneath the dishes. The dishes have the tendency to remain still as long as the friction from the movement of the tablecloth is not t great
Newton's second law: acceleration
The Acceleration of an object by a force is inversely proportional to the mass of the object and directly proportional to the force applied. The acceleration of an object depends on the mass of the object and the amount of force applied to the object. Acceleration is any change of motion; starting, stopping, speeding up , slowing down, and changing directions.
The sports car has a lot less mass so it accelerates faster, the semi-truck has much more mass than the sports car so it accelerates slower.
in the picture below the force of the first box is 20 newtons and the second box's force is 40 newtons so the acceleration of the second box will be greater than the first box.
Newtons third law: Action- reaction
For every reaction there is an equal and opposite reaction.
A rocket taking off creates an action force of gasses pushing down that causes the reaction force of the rocket to go up.