F=ma
What is force?
The object does NOT move when these types of forces are acting on it.
What are balanced forces?
This force acts in the opposite direction of an objects movement when surfaces are touching.
What is Friction?
The term that describes the tendency of objects to resist a change in motion.
What is inertia?
The person who invented the laws of motion
Who is Sir Isaac Newton?
What is mass?
All motion in the universe is caused by these.
What are unbalanced forces?
Objects' masses determine the strength of this force.
What is gravity?
The mathematical formula that describes Newton's Second Law
F=ma or a=F/m
A ball has a mass of 3 kg and a velocity (speed) of 25 m/s heading east. What is its momentum?
75 kgxm/s
(Final Speed - Initial Speed)/Time
What is acceleration?
This is what we call the remaining force after all forces have been accounted for.
What is net force?
To make an object move across a surface, you have to overcome this force.
What is friction force?
Newton's Third Law says that for every action, there is one of these
An equal and opposite reaction
The acceleration of an object is always in the same direction as this.
If mass stays constant but acceleration increases, what happens to the force?
The force increases.
If two forces are acting in opposite directions, we do this to find the net force.
What is the formula for weight?
W=mg
This is a product of an objects mass and velocity
What is Momentum?
Smoothing surfaces, using wheels or rollers, or using lubrication are all ways to reduce this.
What is friction?
If I apply a force of 10 N to a 5 kg ball, what is the ball's acceleration?
The ball's acceleration is 2 m/s2
If I pull left on one end of a rope with 10 N of force and Mr. Reid and Mr. Mauldin pull right on the other end with 10 N of force each, what would be the net force?
10 N of force right.
Why can no object truly slide forever on a frictionless surface on Earth?
Gravity is too strong.
This law says that if there is no net force acting on a system, the total momentum of the system will not change.
What is the Law of Conservation of Momentum?
This type of force causes a tennis ball to bounce.