40 terms

Newton's Laws of Motion

Newton's First, Second and Third Laws of Motion
An object in motion tends to stay in motion, and an object at rest tends to stay at rest, unless the object is acted upon by an outside force.
in a straight line
An object in motion tends to stay in motion.
EX: a car driving down a road.
In space Newton's First Law acts like this
Objects will follow their natural trajectories until they are stopped by an outside force.
On earth Newton's First Law acts like this
The atmosphere will eventually slow down all moving objects, but in a vacuum (an empty space with no air or atmosphere), like space, it will be more obvious that object obey Newton's Laws.
in a fast moving vehicle
One of the most common places people feel the First Law is ???
Car or a bus that comes to a stop
Give examples of some of the most common vehicles that affect this First Law.
An obstruction in the road such as a wall or another object.
If a car is driving down the road, what sort of outside force would cause the vehicle to stop?
An outside force stops the vehicle, but the passengers, who are moving at a high speed are not stopped and continue to move at the same speed as the care. Is this true or false?
On earth
When a car hits a cement barrier (an outside force stops it from moving), the dummy, who is not wearing a seat belt flys through the windshield at the same rate of speed as the car was traveling.
What causes the dummy to eventually hit the ground?
The combination of the downward force of _________ and the horizontal force of the moving car caused the dummy to fly out and hit the ground.
In space
If this collision happened in zero g, in a vacuum, the dummy would keep on flying away from the car at 60mph in a straight line. There would be no gravity to pull him down to the ground.
Acceleration =
Force over Mass
shortened form
A=F/M or F=MA
Is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed to accelerate the object.
Newton's Second Law
A rate at which speed change (M/S/S) F = Forces expressed in N (Newton) is produced when it effects on a mass. The greater the mass amount, the greater the amount of force needed to accelerate.
Newton's Second Law
Heavier objects require more force to move the same distance than do lighter, objects.
50 kgm/s/s, which is equal to 50 newtons
Mike's car weighs 1,000 kg and is out of gas an he is trying to push the car to a station. He makes the car go 0.05 M/s/s. Figure out how many Newtons of force it takes to push the car. To find force use this equation: F=MA, so you plug in the data and get f=1,000KG x 05. m/s/s/
100 kgm/s/s which equals 100 newtons.
Bob's van is out of gas. Bob is pushing to the nearest station. His van is 2,000kg and he makes the car go 0.05 m/s/s. Use Newtons formula to complete the equation. F=MA, so plug in data and get F=2,000kgz .05 M/s/s What is the number of newtons that you have.?
Newton's Third Law
Which of Newton's Laws is the most famous of his laws.
Newton's Third Law
Every action has an equal and opposite re-action.
Newton's Third Law
This law is very important for spacetravel.
In the cold void of space
There is no air for jets to suck or for propellers to churn, yet space ships can maneuver in a vacuum.
The engines propel gas particles out the back of the space ship.
How does one maneuver in a vacuum in space?
the van pushes back
Every action has an equal and opposite reaction. When Bob pushes the van, the van ...
A =F/M
You can compute how much Bob and the van will move after 1 second
A= 100 N / 50 kg
A = 2 2 m/s/s
100 N / 2,000 kg
A= .05 m/s/s
Newtons First Law
An example of a penny Dunkin
First Law
Rollin along
First Law
Push Off
Newtons Third War
Lupersonic Ballon
Third Law
Supersonic Balloon
Newton's Second Law
Moon Shot
Newton's Third Las
Poe's Pundulum Car (no pit)
Newton's First
The Amazing Paper Pull
Newton's Third Law
Poe's Pundulum Car (no pit)
Newton's Third Law
Micky's Smappy car
Newton's First Law
Push off
Newton's Second
Car vs. Bus 2