Newton's Laws
Object at rest stays at rest and an object in motion stays in motion unless acted upon by an outside force.
Newton's First Law of Motion
An object with a mass of 3kg has a force of 9N applied to it. Find acceleration.
A = F/M 9 kg m/s2 / 3k = 3m/s2
Any push or pull on an object?
Force
Resistance to motion that occurs when surfaces are in contact with each other.
Friction
Measure of the amount of atoms in something.
Mass
Every action has an equal & opposite reaction.
Newton's Third Law of Motion
What is the mass of a truck if it produces a force of 14,000N while accelerating at a rate of 5 m/s2?
m = F / a 14,000km/ m/s2 / 5 m/s2 = 2800 kg
Tendency of an object to continue its current motion or lack of motion.
Inertia
Anything that has mass or takes up space.
Matter
Act of something moving.
Motion
The more mass an object has, the more force is needed to move it.
Newton's Second Law
How long will it take to go 150 km traveling at 50 km / hr.
T =D/S 150 km / 50 km/hr. = 3 hrs.
The sum of all the forces acting on an object.
Net Force
Speeding UP
Acceleration
If a car stops suddenly, the passengers keep
Moving
What law is connected to inertia?
Newton's First Law
Whale swims at a constant speed of 8 m/s for 17 s. Find the distance traveled by the whale.
D= S X T 8 m/s /17 s = 136 m
Attractive force that all objects exert on each other.
Gravity
What does this represent? Km
kilometers
Distance between two cities is 144 m, it takes 3 hrs. to travel between these cities. Calculate average speed.
S = D/T 144 km/3 hrs. = 48 km/hr.
Relationship between force, mass & acceleration.
Newton's Second Law
A rocket travels a distance of 576 m in 6 s. Find the speed of the rocket.
S = D/T 576 m / 6 s = 8.86 m/s
When all forces acting on an object create a net force that allows the object to move
Unbalanced Forces
Slowing DOWN
Deceleration
At the equator, the earth spins a distance of 25,992 mi/dy. Calculate the average speed of the earth.
25,992 mi/dy. / 24 hr./dy. 25,992 mi/hr.