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9 Week TEST
3rd 9 week TEST
Question | Answer |
---|---|
What is the combination of all the forces acting on an object? | Net Force |
_____ is when forces acting on an object combine and form a net force of zero. | Balanced force |
Unbalanced forces are when forces acting on an object combine and form a net force that do not equal zero. Tru or False? | True |
Newton's ______ Law of Motion states that an object in motion stays in motion and an object at rest stays as rest, unless it is acted upon by an outside force. * | First |
An object that has more mass than another object and is experiencing the same net force, will accelerate ______. * | less |
A push or a pull on an object is ________. | force |
True or False. On earth, gravity, friction and applied forces are the three most common forces that act on objects. * | True |
Force is a vector because it has both ______ and _______. * | size and direction |
List the type of friction. When two objects are touching but not moving | static |
Friction that occurs in gases and liquids is called______ friction. | fluid |
A factor that affects the amount of friction against an object moving through the air include an objects_____. | speed |
The formula for acceleration is _____ and the SI units are ____. | a = F/m and m/s2 |
True or False. For a given force, an object will accelerate less if it has a greater mass. | True |
When one object exerts a force on a second object, the second object exerts an equal force in the opposite direction on the first object is called _________> | Newtons Third law of motion |
_______ _________ is the force that two objects apply on each other | force pair |
True or False. Momentum is a measure of how hard it is to a moving object. | True |
Complete the sentence using one of the following words: momentum, velocity or acceleration. The property of a moving object that makes it hard to stop is ______________. | momentum |
The SI units for momentum are ________. | kg. m/s |
Factors that determine an object's momentum include its _________. | mass and velocity |