Vocabulary Vault
A push or pull that can change an object's motion.
Force
You slide a book across a table and it slows down.
Friction
The distance divided by the time it takes.
Speed
An object at rest stays at rest unless acted on by a force.
Newton's 1st Law
Force is to push as friction is to ____.
Resist
Friction
A ball falls from your hand to the ground.
Gravity
A toy car rolls 2 meters in 4 seconds. What is its speed?
0.5 m/s
A baseball accelerates faster than a bowling ball when hit with the same force.
Newton's 2nd Law
Gravity is to Earth as magnetism is to _____.
Magnets
The force that pulls objects toward Earth's center.
Gravity
A rocket pushes exhaust gases downward, and the rocket moves upward.
Action and Reaction Force
When an object changes its speed or direction, it is said to be changing its ________.
Motion
A rocket launches into space because gases push down and the rocket pushes up.
Newton's 3rd Law
Speed is to distance and time as mass is to ____ and _____.
Matter and inertia
When all forces acting on an object are equal, the object is in _________.
A magnet pulls a paperclip without touching it.
Magnetic Force
A graph shows a straight horizontal line on a distance-time graph. What does this mean?
It's not moving
The formula F = m x a belongs to which law?
Newton's 2nd Law
Balanced for is to no motion as unbalanced force is to __________
change in motion
The measure of how much matter is in an object.
Mass
A swimmer pushes water backward with their arms and moves foward
Action-reaction
If a runner goes 100 m in 20 s, then 200 m in 40 s, what can you say about their speed?
It's constant.
A passenger keeps moving forward when the car stops suddently.
Inertia/Newton's 1st Law
Newton's 1st Law is to inertia as Newton's 3rd Law is to _____.
Action-reaction