The overall acting force on an object when all the forces are combined
What is NET FORCE
100
THE STATE OF MOTION OF AN OBJECT DOES NOT CHANGE AS LONG AS THE NET FORCE ACTING ON THE OBJECT IS ZERO
What is Newton's 1st Law of Motion
100
Newton's 3rd Law can be paraphrased ....
FOR EVERY ACTION THEIR IS AN EQUAL AND OPPOSITE REACTION
100
This force can attract or repel
What is ELECTRIC
100
A push or a pull that acts on an object
What is FORCE
200
kg∙ m/s^2 (kg times meters per second squared)
What is a NEWTON
200
The tendency of an object to resist a change in it's motion.
What is INERTIA?
200
Give an example of Newton's 3rd Law
Answers vary
200
This force deals only with protons and neutrons
What is STRONG NUCLEAR FORCES
200
The net force is zero and there is no change in the object's motion
What are BALANCED FORCES
300
When _______________________ acts on an object, the object accelerates.
What is an UNBALANCED FORCE
300
____________ is a measure of the inertia of an object and depends on the amount of matter the object contains.
What is MASS
300
_________________ is the product of mass times velocity
What is MOMENTUM
300
Responsible for nuclear deacy
What is WEAK NUCLEAR FORCE
300
Because of these two things a projectile follows a curved path.
What is INITIAL FORWARD VELOCITY and DOWNWARD VERTICAL FORCE OF GRAVITY
400
Static friction, sliding friction, rolling friction, and fluid friction.
What are the four main types of friction from STRONGEST to WEAKEST
400
Newton's 2nd Law of Motion States
acceleration = net force divided by mass
a = F/m
or F = MA
400
The Law of Conservation of Momentum States
If no net force acts on a system, then the total momentum of the system does not change.
400
Weakest and most effective universal force
What is Gravitational Force
400
Another way to express INERTIA --
What is AN OBJECT AT REST TENDS TO REMAIN AT REST AND AN OBJECT IN MOTION TENDS TO REMAIN IN MOTION WITH THE SAME DIRECTION AND SPEED
(THINK CRASH TEST DUMMY)
500
_____________ causes objects to accelerate downward and _____________ acts in the direction opposite to the motion and reduces the acceleration.
What is GRAVITY AND AIR RESISTANCE
500
Weight is the force of gravity acting on an object. How do you calculate the weight of an object?
What is
W = mg
double bonus points for telling the value of g with correct units
500
in a ________________ system, the loss of momentum of one object equals the gain in momentum of another object - momentum is conserved.
What is CLOSED
500
Two factors that influence gravitational force?
What is mass and distance
Extra bonus points if you can describe how each factor influences gravitational force.
500
Would the mass and weight of an astronaut be the same on the Earth and the Moon? Explain
Mass would be the same
Weight would be ~1/6 on the moon, since the moon has ~1/6 the gravity of the earth