Force
A push or pull on an object.
Force
What is the change in an object’s position over time?
Motion
The force that pulls objects towards Earth?
Gravity
A force that can attract or repel certain metals.
Magnetism
Who invented the three laws of motion
Isaac Newton
What is the type of force that resists motion between two surfaces?
Friction
The movement of an object along a straight path?
Linear Motion
Who is the scientist who discovered gravity by having an apple fall from a tree?
Isaac Newton
What is the magnet ends called?
The pole ends North, south, top, or bottom
Newton’s First Law says that an object at rest stays at rest unless acted on by this.
Unbalance force
What is the force that pulls stuff down?
Gravity
How fast an object moves in a particular direction.
Velocity
The strength of gravity depends on these two things.
The mass or weight and the distance between the objects
Magnetic force is strongest at this part of a magnet.
The poles
Newton’s Second Law is often written as F = m × a. What do the letters stand for?
Force, mass, and accerlation
What force are you demonstrating when you pull a chair across a room?
Applied force
The measure of how fast an object is moving.
Accerlation
Gravity keeps what in order around the sun?
Planets
What object is strongly attracted to magnets
Iron
Newton’s Third Law states that for every action, there is one of these.
Equal and opposite force
This force occurs when two objects are in contact and one pushes or pulls on the other.
Contact force
What changes an object's motion, causing it to accelerate, start moving from rest, or change speed or direction
Unbalance force
What is the reason why astronauts appear weightless when orbiting in space, even though gravity still affects them?
Free fall
What material does not allow magnetic fields to pass through easily?
Non-magnetic objects
When you jump off a small boat and the boat moves backward, which of Newton’s Laws are you demonstrating?
Newton third law of motion