Show:
Newton's 1st
Newton's 2nd
Newton's 3rd
Gravity
Vocabulary
100
What does it take to change an object's state of motion?
A force
100
What is the formula for Newton's 2nd Law?
f=ma
100
What is Newton's 3rd Law?
For every action, there is an equal but opposite reaction
100
An attraction between the mass of Earth and the mass of an object
What is gravity?
100
A push or pull that acts on an object
What is force?
200
Is a force needed to keep a moving spacecraft moving in a straight line?
No. An object moving at a steady rate in a straight line will continue to do so until an outside force acts on it.
200
Given the same amount of force (not on a ramp), which will accelerate more: an empty shopping cart or one filled with watermelons?
An empty shopping cart
200
What happens when one object exerts a force on another?
The second object feels the action force, the first object feels the reaction force.
200
This force might cause a feather to slow down as it is falling
What is air resistance?
200
The tendency of an object to resist a change in its state of motion
What is inertia?
300
What is Newton's 1st Law?
Objects in motion tend to stay in motion. Objects at rest tend to stay at rest.
300
What two factors determine how great an object's acceleration is?
Mass and force
300
When one object applies a force to a second, we call this force the __________.
Action
300
This man reasoned that all objects fall at the same rate, regardless of their mass
Who is Galileo?
300
Opposes the motion of one object moving past another
What is friction?
400
What is the opposite of acceleration?
Deceleration
400
How is velocity different from speed?
Velocity is an object's speed in a certain direction
400
What is one example of Newton's 3rd Law?
Baseball bat, water in a hose, rocket ship taking off,...etc.
400
We are pulled to the ground by the same force that keeps the _________ orbiting Earth
Moon
400
The speed of a moving object taken together with its direction of travel
What is velocity?
500
Two objects can have the same speed but different ______________.
Velocities
500
Doubling an objects mass will make it accelerate _________ as much
Half
500
How does an accelerating race car demonstrate Newton's 3rd Law?
The car's tires push to the rear on the road surface. At the same time, the road pushes back on the tires in a forward direction.
500
Newton's law of gravity is ______________ because it applies to any object
Universal
500
A change in velocity
What is acceleration?