One
A change in position relative to a frame of reference.
Motion
What two factors affect the gravitational attraction between objects?
Mass and distance
What does the Newton (N) stand for?
Force
Neither; it is a balanced force.
This word is the attraction between objects.
Gravity.
A force that acts in a direction opposite to the motion of the moving object.
Friction
What is the device that contains a small magnet that helps us find our way?
Compass
As you move a nail further away from a magnet, its attraction to the magnet...
Gets weaker
Solve this: 9N to the right/8N to the left
1N to the right
Like poles...
repel each other
Solve this: 100N to the left/100N to the right
ON
What is represented by arrows to show the size and direction?
Force
A roller coaster going down a hill is an example of what type of force?
Unbalanced.
The area of magnetic force around a magnet is called...
Magnetic field
What happens when two forces act on an object in the same direction?
The forces add together.
Opposite poles...
attract each other
The closer together a magnet's magnetic field lines are...
The stronger the magnetic field.
This is the measure of the force of gravity on an object.
Weight
This term is an example of force.
Weight
Solve this: 10N to the left/40N to the left/35N to the right
15N to the left
When an object is moving- what effect will a balanced force have on the object?
It will continue at a constant speed.
If you throw a softball and a baseball with the same amount of force, what will happen?
The baseball travels farther than the softball.
If you have a bicycle and a car...which would require more force to slow down?
A car because it has more mass and more inertia.
Two equal forces act at the same time on the same stationary object, but in opposite directions. What happens to the object's motion?
The object remains stationary.
If two football linemen push against each other and then do not move, but then lineman B moves forward and lineman A moves backward, why does this happen?
The forces are balanced, but then Lineman B exerts a greater force. This causes an unbalanced force.