Forces
What is the definition of force?
A push or pull
What is the definition of friction?
The force that 2 surfaces exert on each other when they rub on each other.
What is newtons 1st law?
An object in motion stays in motion unless acted on by an outside force
What is the definition of projectile motion?
The curved path an object follows when thrown, launched, or otherwise projected near the surface of earth.
What is the definition of force?
A push or pull
What are the 2 effects of friction?
1.Type of surface
2. how hard the surfaces are pushed together
What is Newtons 2nd law?
F=ma
what are the 2 concepts of projectile motion?
Vertical and horiztontal movement
How is Force described?
Strength and direction in which it acts.
What direction does friction act in?
Friction acts in the opposite direction to the direction of the object's motion.
What is newtons 3rd law
Every action has an equal and opposite reaction.
What is an example of horizontal concept?
an object moving forward
What are the 4 types of forces?
Gravity, electromagnetic, strong nuclear, and weak nuclear
what are the 5 types of friction
static, kinetic, rolling, fluid, and sliding
What are the 3 equations used to find force, mass, acceleration
F=ma
m=f/a
a=f/m
What does vertical concept mean?
the object would run straight down is there was no air resistance
What is net force?
Combination of all the forces on an object.
when does static friction occur?
Occurs when 2 solid surfaces slide over eachother
What are the 2 ways force can be looked at?
1. Size of masses
2.the distance
Why does the moon orbit the earth and the earth orbit the sun?
Because of projectile motion.