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Terms in this set (42)
change in velocity over time
distance over time
speed with a direction
accelerating in the direction opposite to the motion of the object
change in velocity divided by change in time
unit for acceleration
change in velocity
subtract starting speed from ending speed
change in time
subtract starting time from ending tme
unit for velocity
unit for time
unit for speed
unit for distance
acceleration due to gravity on Earth
9.80 m/s 2
A force that opposes the motion of a body through air
resistance (a force that acts in the opposite direction of motion.)
(physics) the tendency of an object to keep doing what it is doing. (the more mass an object has, the more inertia it has)
the motion of a falling object when the only force acting on it is gravity
newton second law
the acceleration of an object depends on the mass of the object and the amount of force applied
Newton's first law
an object at rest will stay at rest, an object that is moving will stay moving unless disturbed by an un balenced force.
Newton's third law
For every action there is an equal and opposite reaction
A measure of the amount of matter in an object
The force that causes a mass of 1kg to accelerate at 1ms^-2
the combination of all forces acting on an object
A measure of the force of gravity on an object
the speed at which the acceleration of a falling object is zero because friction balances the weight 43
Rise over run
a force that occurs with every action force is called an
resistance to change in motion is
unit for mass
the variable that you are investigating (the variable that causes the change in an investigation ) . On a graph this variable goes on the Y axis.
the variable that changes as a result of the independent variable. On a graph this variable goes on the X axis.
same as the independent variable
variables in an investigation that remain unchanged.
causes change in a system
Energy that is waiting to do work.
energy in motion
law of conservation of energy
energy can not be created or destroyed.
law of conservation of momentum
total momentum before a collision = total momentum after the collision.
1st law of motion
an object at rest stays at rest and an object in motion stays in motion unless acted on by an unbalanced force
2nd law of motion
explains why it takes more force to move a truck that it is to move a bike at the same speed
3rd law of motion
for every action there is an equal and opposite reaction
a push or a pull
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