What are Forces
A push or pull that acts on an object
What is Force
The rate at which the speed or direction of motion of an object changes over time
What is Acceleration
Forces that cancel each other out and cannot change the motion of the object
What are balanced forces
An area of partial darkness where light has been blocked by an object
A force that requires two pieces of matter to touch
What is Contact Force
The tendency of an object to resist any change in motion
What is Intertia
When you ride a roller coaster, what makes your body rise out of its seat at the top of a hill
What is Inertia
Moving your hand closer to a flashlight will make the shadow ______
What is larger than your hand
The force that results when two materials rub against each other or when their contact prevents sliding
What is Friction
What is Newton's First Law of Motion
If there was no gravity what would happen when you removed the magnet from the paper clip in the lab
What is Fall to the ground
Around noon, when the sun is highest in the sky, your shadow is _____
What is Short
A force that acts at a distance
What is Non-Contact Force
This says that the greater the mass of the object, the smaller its change in motion will be for a given force
What is Newton's Second Law of Motion
When two forces act on the same object and have the same direction, their strengths can be _________
What is Added Together
Early in the morning or late in the day, the sun is lower in the sky. Your shadow is _______
What is Longer
The force of attraction between any two objects
This states that when one object exerts a force on a second object, the second object exerts a force on the first
What is Newton's Third Law
Suppose it takes 260 N of force to push an object. One person pushes with 140 N of force. A second person helps by pushing in the same direction. How much force does the second person need to apply?
What is 120 N
When the sun is low in the sky early in the morning, trees form
What is long shadows