Newton's Laws
Newton's Laws 2.0
Electric & Magnetic Forces
Gravitational Forces
Electric Fields
100
Which Newton's Law states that for every action there is an equal and opposite reaction.
Newton's 3rd Law
100
Describe an object's motion when a constant force is applied to it that overcomes the force of gravity and friction.
It will slowly accelerate in the direction of the net force.
100
Two electrically opposite charges are separated by a fixed distance. Name 2 ways you can increase the force of attraction between these objects.
1) Move them closer
2) Increase the charges
3) Add electrons to the - charge
4) Remove electrons from the + charge
100
What is the force that is only known as an attractive force.
Gravitational Force
100
If a positively charged sphere sits on an insulated table, which statement describes the charge population on the sphere?
1) there is a deficiency of electrons on the sphere
2) there is a deficiency of protons on the sphere
3) there is an excess of electrons on the sphere
4) there is an excess of protons on the sphere
1
200
If a child pushes a toy with 10 N of force to the south what is the reaction force?
10 N North, acting on the child
200
What happens to an object when all forces acting on it are balanced.
Remains motionless, NO MOTION
200
What charge does both X & Y have?
Both +
200
What 2 things are needed to determine the amount of gravitational attraction there will be between 2 objects?
Mass & Distance
200
2 identical neutral spheres sit on a table. If sphere 1 is given a net positive charge and sphere 2 is given a net negative charge, how did the electron transfer work to make this possible?
Electrons were removed from sphere 1 and added to sphere 2.
300
This illustration is an example of which one of Newton's laws?
Newton's 3rd law
300
If 2 objects of equal mass are placed on the opposite sides of a balance what would this best represent?
Balanced forces.
300
Which material is most likely a permanent magnet?
Material Z
300
What about gravity does this image properly illustrate?
How gravity is the attraction of the center of masses of 2 objects.
300
If W is + what charge must 1 & 2 have?
Both +
400
The acceleration of an object depends on its mass and what else?
The amount of force acting on it.
400
What is the Net Force of the following illustration?
50 N to the left.
400
Which statement is true of the below illustration?
A) X exerts a force on Y to the right, and Z exerts a force on Y to the right
B) X exerts a force on Y to the right, and Z exerts a force on Y to the left
C) X exerts a force on Y to the left, and Z exerts a force on Y to the left
D) X exerts a force on Y to the left, and Z exerts a force on Y to the right
C
400
The force of gravitational attraction between Earth and any object on Earth is measured as what?
Weight
400
If this negative charge is projected with velocity between these two charged metal plates, which path will it most likely travel?
Path C
500
Define all three of Newton's 3 Laws of Motion.
Newton's 1st Law - (Law of Inertia) An object in motion/rest stays in motion/rest unless acted on by an outside force.
Newton's 2nd Law - F = M x A
Newton's 3rd Law - For every action there is an equal and opposite reaction.
500
In which direction will the center of the rope go & what is the Net Force?
WEST - 15 N to the west
500
Why does increasing the number of batteries in a circuit increase the speed at which an electric motor spins?
Because the increased electrical force increases the magnetic force in the motor.
500
Name 2 places you can go on earth to weigh less than you do here in Elk City?
1) Mountains/higher elevation
2) South/closer to the equator
3) Somewhere where the ground is less dense
4) Anywhere further from the center of the earth
500
If the magnet on the right is moved towards the suspended magnet on the left what will happen?
There will be an attractive force and it will pull the suspended magnet to the right.