Momentum
The letter that stands for momentum
P
How we defined force in class.
A push or a pull
The term given when a force is stronger in one direction than in the other.
Unbalanced force
This person is given credit for saying, "If I have seen further it is only by standing on the shoulders of giants".
Isaac Newton
The total amount of force put on an object
Net force
The action of one surface or object rubbing against another
Friction
The formula to calculate momentum.
P = mv
The unit that force is measured in.
Newtons
The two things that momentum depends upon
mass and velocity
Which of Newton's laws explains why your body jerks forward after your parents have applied the brakes quickly.
Newtons 1st law
It is this kind of force when an object is not moving
balanced force
The force that attracts an object toward the center of another object
gravity
The total momentum before is equal to this.
The total momentum after
The formula for force. (Newton's second law.)
F = ma
Newton's 3rd law
For every action there is an equal and opposite reaction.
Forces always act in _____________
pairs
This happens when forces aren't balanced.
Movement/motion
An objects tendency to resist a change in motion
inertia
The momentum of a 2,000 kg truck traveling at a velocity of 16 meters per second.
(Answer must be complete)
32,000 kg/ms
The force of a car that has a mass of 7000 kg and is accelerating at 5 m/s2.
(Answer must be complete)
35,000 newtons
Newtons 1st law
An object at rest remains at rest and an object in motion remains in motion unless acted on by an outside force.
The law that is seen in the Newton's Cradle as the metal sphere on one side moves when a metal sphere hits the other side.
Newton's 3rd law
This happens to force when you increase mass or acceleration
Force increases
How fast something is moving in a given direction
velocity
A system is defined as a group of objects that will be doing this in relation to each other.
colliding or separating
The acceleration achieved when Billy swings the 50 kg hammer with a force of 800 Newtons.
16 m/s2
The term given to the fact that the total momentum before will be equal to the total momentum after.
Law of conservation of momentum
Name the three things that force causes. (What we see to know that a force has acted upon something)
cause to start or stop
cause to change shape
cause to change direction
A car travelling with a force of 5,000 N crashes into a wall. What is the force that the wall pushes back with.
5,000 N
Increase in the rate of speed of something
acceleration