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| Issac Newton |
Newton's first law
First Law: "An object at rest or moving at a constant speed will remain at rest or keep moving at a constant velocity if no resutan force acting on the object".
What happens to the driver if the car moves from rest or when suddenly the brakes?
a. The driver pushed into the background. Stationary objects tend to remain motionless.
b. The driver moves forward when braking. A moving object tends to keep moving.
Example of life real (newton's first law)
If the object in motion tends to stay in motion, moving objects why not go on forever?
=>Objects not keep moving forever because there is almost always unbalanced force that works.
Types of friction
l Sliding friction: ice skating
l Rolling friction: bowling
l Fluid friction (air or liquid): air or water resistance
l Static friction: initial friction when moving an.
In outer space, away from any source of gravity and friction, a rocket is launched with a certain speed and direction will continue in the same direction and at the same pace forever.
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