newtons laws
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34 Terms
Force
is a push or pull
Inertia is…
the tendency for an object to resist a change in motion
Newtons 2nd law of Motion says…
acceleration is based on an objects mass and force applied to it
Newtons 3rd law of Motion says…
For every action there is an equal and opposite reaction.
F=m*a
What is the equation for Force?
Newtons
What units is Force measured in?
Balanced forces
cause no change in motion
unbalanced forces
cause an object to start moving, stop moving or change direction. The net force is greater than zero.
mass
measured in kilograms
Inertia depends on an objects…
mass
If there is more mass, then there is…
more inertia
If there is less mass, then there is…
less inertia
less inertia
Objects change their motion easily if they have…
more inertia
Objects have a harder time changing their motion if they have…
Because of Newton's 3rd Law- action and reaction
A rocket takes off because of which law?
They are in motion and want to stay in motion
Why do the blocks fly off the car when it crashed into the wall?
Small rock
Which of the rocks will have the greatest acceleration if pulled with 50 N of force?
Big rock
Which rock will need the most force to accelerate to 6 m/s^2?
not change its motion until an outside force acts on it
An object in motion or at rest…
3rd Law example
The balloon is an example of which law?
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2nd Law example
Which law is this an example of?
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Newton's 1st Law
An object at rest will remain at rest and an object in motion will remain in motion, unless acted on by an unbalanced force.
Also called the "Law of inertia"
Mass
The amount of matter in an object
Friction
A force that opposes or slows down motion
Gravity
A force that always attracts or pulls objects toward each other without direct contact or impact
Free Fall
Motion under the influence of gravity only. Example: Jumping off a rock into the ocean.
Motion
An object's change in position over time.
Speed
the rate at which an object moves.
Velocity
describes both speed & direction.
Acceleration
the rate at which velocity changes.
Weight
a measure of the force of gravity on the mass of an object