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Leandra
Question | Answer |
---|---|
s= | d/t |
v= | D/t |
w= | Fd |
a= | Sf-Si/T |
a= | Fnet/m |
MA= | Fo/Fi |
F= | ma |
Sf= | Final Speed |
MA= | Mechanical Advantage |
Si= | Initial speed |
Fnet= | Net Force |
force is | a push or a pull |
First law of motion is | a body remains at constant velocity unless an unbalanced force acts on it |
What is inertia | to continue in a straight line unless acted upon a force. |
Gravity is a | force |
friction incolved in a wagon moving down a hill is | rolling friction |
As the force acting on you increases, your acceleration | increases |
The unit of force is the | newton |
if you go to the moon your mass | remains the same |
as you glide across a frozen pond it is called | sliding friction |
an ant falling from the roof of a house lands unharmed because of | air resistance |
Secound law of motion is | an object acted on by an unbalanced force will accelerate in the direction of the force with an acceleration given by the following acceleration. |
Third law of motion is | forces always act equal to each other. |
friction is | the force that resists sliding motion between surfaces that are touching |
relative motion | an object's position change is described in terms of a reference point |
constant speed is | the same at any given moment in time |
contact force | involves objects touching each other |
long-rang forces | include gravityu, magnetism, and electricity |
Inertia measures | an object's tendency to remain at rest or keep moving |
balanced forces | forces that are equal but in opposite directions canceling each other |
Unbalanced forces | if one force is greater that another, a change in motion |
static friction | keeps a stationary object from moving on a surface when a force is applied to the object |
Amachine that uses only one movement | simple machine |
the force you apply when using a machine | input force |
probably the first simple machine | lever |
mechanical advantage is | the number of times the applied force is increased by a machine. |