Newtons 1st Law
it starts accelerating forward
m/s2 is?
what is the unit of acceleration
what is an action force?
exerts a force onto another object
what is a force that acts between materials as they move past each other
friction
If two people are pushing against a large box in the opposition direction is the force balanced or unbalanced?
what is resistance of an object to change in its motion?
what is inertia
any force that keeps an object moving in a circle is a?
what is an centripetal force
how many forces are required for an interaction?
two forces (a pair)
what 2 factors affect the force of friction.
how hard the surfaces push each other and the types of surfaces invloved.
what is a net force?
combination of all forces on an object.
what is another name for newtons first law?
what is the law of inertia.
as speed increases so does air resistance
speed-air resistance
what exerts an equal and opposite force back on the object?
does a smooth or rough surface create more friction?
what is a rough surface
what is gravity
attractions between objects that have mass
what is required to to change the motion of an object?
what is force
what is the equation to express the relationship between net force, acceleration and mass
∑F=ma
what are the 2 interacting forces that are equal in strength and opposite in reaction?
action and reaction forces
what is static friction?
the friction that acts on objects that are not moving
how do you know if a force is unbalanced?
if the force is unbalanced then there are unequal amounts of forced being pushed on something and that thing is moving.
what is newtons first law?
an object at rest will remain at rest and an object in motion will remain in motion unless acted on by another object
what is newtons second law?
Force and Acceleration
whenever one object exerts a force on a second object the second object exerts an equal and opposite force on the first object.
what is Newtons 3rd law
what is sliding friction?
2 solid surfaces sliding over eachother
how do you know if a force is balanced?
If a force is balanced then there are equal amounts of force pushing on something and that thing is not moving,