Newton's Laws
every object continues in a state of rest or of uniform speed in a straight line unless acted on by another force
any push or pull exerted on an object, measured in Newtons
what is a force?
a = fnet/mass
what is the formula for free fall?
The effect the earth has on the moon
what is gravitational pull?
The quantity of matter in an object
The acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of an object
what is newton's second law of motion?
When you push against a wall with your fingers, they bend because they experience this.
what is the wall pushing back
F/m=a
What is the force due to gravity divided by mass equals acceleration?
The effect the moon has on the earth
What is tides?
The force upon an object due to gravity
what is weight?
acceleration ~ 1/mass
what is newton's second law of motion?
When you step from a curb, you fall to the earth.
What is the earth falling to you?
What is gravitational attraction?
weight = m x g
calculate the weight in newtons of a person who has a mass of 50kg
what is 500 Newtons?
The resistive force that opposes the motion or attempted motion of an object either past another object with which it is in contact or through a fluid
what is friction?
motion under the influence of gravitational pull only
Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first
What is Newton's Third Law of Motion
what is external acceleration
______ = total distance covered divided by time interval
what is average speed
forces that effect an airplane
what is lift, drag, weight, and thrust
The SI unit of force
what is a newton?
when pushing an object, the object pushes you back
the state of an object or system of objects for which their are no changes in motion.
what is mechanical equilibrium?
a jumbo jet cruises at a constant velocity of 1000 km/h when the thrusting force of its engines is a constant 100,000 N. The acceleration of the jet and its air resistance are:
what is zero
an aspect that is continually decreasing as an airplane flies
what is weight?
upward reaction force