force, mass and acceleration
an action exerted on an object that may change the object’s state of rest or motion
What is force?
the tendency of a body to maintain in a state of rest or uniform motion unless acted upon by an external force
What is inertia?
An object in motion stays in motion and an object at rest stays at rest unless acted upon by an outside force.
What is the definition of the first law?
mass multiplied by acceleration
what is the calculation for force?
to every action there is always an equal opposing reaction
what is newton’s third law?
has both magnitude and direction
what is a vector?
measure of an object‘s inertia
what is mass?
Law of inertia
What is another name for the first law of motion?
the mathematical relationship between the net force (cause) and the change in motion (effect)
what is newton’s second law of motion
the two interacting forces that are equal in strength and opposite in direction
what is action and reaction?
SI unit of force
What is Newtons?
The more mass an object has, the greater its inertia and the more force it takes to change its state of motion.
What is the relationship between mass and inertia?
a single force whose external effects on a rigid body are the same as the effects of several actual forces acting on the body
what is net force?
The size of the force applied, and the mass of the object.
what does acceleration depend on?
mass multiplied by change in velocity
what is momentum?
vector arrows represent all the forces acting in a situation
what is a force diagram?
it will remain at rest
what happens to an object at rest due to inertia?
the force that acts between materials as they move past each other
what is friction?
when one increases, the other DECREASES
what is an inverse relationship?
kg m/s
what is momentum SI unit?
shows only the forces acting on the object of interest
what is a free body diagram?
reduces the effect of inertia
what do seatbelts do?
causes a falling skydiver to slow down after the parachute open
what is air resistance?
Any force that keeps an object moving in a circle
what is a centripetal force?
Rocket's move by pushing against the burning gases from their exhaust.
what is an example of newton’s third law?