the force of attraction between any two objects
A push or pull that acts on an object
isThe tendency of an object to resist any change in motion is known as
The force that results when two materials rub against each other
The rate at which the speed or the direction of motion of an object changes over time is its
What is a balanced force?
All forces have 2 things. What are these?
How do electric and magnetic forces act on different objects?
If a rock has a larger mass, the force on the mass must be _____ to give it a large acceleration
What makes your body rise out of your seat at the top of a hill in a rollercoaster?
What is Newton's First Law?
What is Newton's Second Law?
What is Newton's Third Law?
The greater the net force acting on an object, the ________ the acceleration of the object.
What happens when an object accelerates?
Light is a form of _______.
Light energy travels in __________.
A ______ is an area of partial darkenss where light has been blocked by an object.
When the sun is low in the sky early in the morning, we form long or short shadows?
When light passes through a clear windown, does the window have a shadow?
Why does a car keep rolling even if it runs out of gas?
What kind of surface would slow a marble down as it rolled across the floor.
If you were building a car to enter a downhill race, what can you do to make your car go as fast as possible?
What is a non-contact force that acts on a baseball after a pitcher has thrown the ball?
What is one contact force that acts on a baseball after a pitcher has thrown the ball?
Gravity
Force
Inertia
Friction
Acceleration
Two forces of equal strength push or pull on an object in opposite directions
strength (magnitude) and direction
They either push or pull objects
large
Inertia
An object in motion stays in motion unless a force acts on it. An object at rest stays at rest unless a force acts on it.
The force acting on an object can cause the object to speed up, slow down, or change direction.
When one object exerts force on a second object, the second object exerts force on the first. These forces are equal in strength and opposite in direction.
greater
Its speed or direction changes
energy
waves
shadow
long
No, the light waves pass through it
It has inertia
A surface with friction (ex. grass, carpet, sand)
Make the car heavier to move faster down hill and give it smooth shape to reduce air resistance.
Gravity gradually pulls the baseball down.
Air resistance slows the baseball as it moves through the air
