These forces are equal in size and opposite in direction and therefore cancel each other out.
What is balanced forces
100
A __________ stops an object from moving (if it is already moving)or starts it moving.
What is force
100
______ is the force to move an object through a distance.
What is work
100
When two foces act on an object with the same amount of force you should __________ them together to get the net force.
What is add
100
The force that keeps the moon in orbit around the Earth.
What is gravity
200
When _______________ forces act on an object, the object speeds up, starts to move, slows down, stops, or changes direction.
What is unbalanced
200
___________ is a force that opposes, or acts against,motion when two surfaces rub against another.
What is friction
200
_________________ involves speed because it measures how quickly something or someone does work.
What is power
200
The "N" in 120N means ___________.
What is newtons
200
Adding or subtracting the forces gives you a value of __________.
What is net force
300
___________ forces can stop a moving object
What is unbalanced
300
____________ is the force of attraction between magnets and the magnetic objects.
What is magnatism
300
___________ is the metric unit of power.
What is a watt
300
When two forces are acting against each other (pushing in opposite directions) then you ____________ the smaller number from the larger number to get the net force.
What is subtract
300
The force of gravitation between two objects __________ on both objects
What is pulls
400
If two equal forces act on an object in opposite directions, the net force will be _______.
What is balanced
400
_____________ is the force that pulls all objects in the universe toward one another.
What is gravitaion.
400
A _____________ is something that makes a task easier by changing the size or direction of a force or the distance over which the force acts.
What is a machine
400
One watt is equal to doing 1 joule of work in ________ second.
What is one
400
One of the basic laws of science is that forces always/never act in ______________.
What is always act in pairs.
500
Suppose you ride a bike along a flat, straight road at a constant speed. The forces are _______________.
What is balanced.
500
The forces of gravitation between two objects is less when ________________.
What is the distance between them is greater
500
A ____________ can be used to help the gardener to get the tree stump out of the ground with less effort on the gardener.
What is a pulley
500
To calculate the amount of work you did you must multiply the amount of force used to move the object by the distance the object moved. The metric unit of work is the ____.
What is joule
500
The two things that must happen for work to be done.
What is force must be applied and the object must move through a distance.