Newtons laws of motion
Newtons 1st law of motion is known as the law of
Inertia
What is a force
a push or pull on an object
What is friction?
a force that acts when two surfaces touch each other.
acceleration is
the rate of change in the speed of an object.
what tells us the rate at which an object moves
speed
Objects stay at rest unless ...
they are acted on by an unbalanced force.
What does a force have
size and direction, magnitude and direction. It is a vector quantity.
If you kick a ball, it will roll to a stop because
friction slows the ball down
When at rest, acceleration will be at
zero
A change in position measured by distance and time is
motion
This causes an object to slow down or speed up.
friction
The units of force
Newtons (N)
less friction means
its harder to stop.
The acceleration while you are at a constant speed
zero
What tells the speed and direction of a moving object
velocity
which law states force is dependent on the mass and acceleration of an object.
Newton's 3rd law of motion
The sum of forces acting on an object are called
Net forces
Friction only happens with
solid objects
The opposite of acceleration is
deceleration
The change in position of an object is called
displacement
F=ma
Newtons 2nd law of motion
What is used to show the direction and strength of force?
arrows
Friction is reduced by
lubrication
If time is increasing but distance does not change, an object is
at rest
The exact place an object is its
position