mass x acceleration due to gravity, the gravitational force exerted on a person or object at the surface of a planet, measured in newtons and mass (in kg)
What is weight?
100
An object will remain at rest or moving at a constant velocity unless it is acted upon by an unbalanced force.
AKA law of inertia
What is Newton's first law?
100
a characteristic of a moving object that depends on mass and velocity, makes it harder to change an object's velocity, measured in kg x m/s
p=mv
What is momentum?
100
mass per unit volume, can be used to tell if an object will sink or float
d=m/v
What is density?
200
A push or pull, described by its magnitude and by the direction in which it acts
What is a force?
200
compression (squeezes or pushes matter together) or tension (stretches or pulls matter)
What is an elastic force?
200
proposed 3 basic laws of motion in the late 1600s
Who is Isaac Newton?
200
saving resources/before and after conditions
What is conservation?
200
An object that is _____ dense than the fluid it's in will sink, and an object that is _____ dense than the fluid will float.
What is more, less?
300
These cause an object's velocity to change.
What is an unbalanced force?
300
A force that two surfaces exert on each other when they rub against each other, 4 different types, strength depends on the types of surfaces involved and on how hard these surfaces push together
What is friction?
300
influenced Newton's laws, Italian astronomer, suggested force is needed only to change the motion of a moving object
Who is Galileo Galilei?
300
don't cancel out, act on different objects, 2 opposite forces
What is an action-reaction pair?
300
the ability to float
What is buoyancy?
400
The SI unit for the magnitude/strength of a force.
What is a newton?
400
a type of fluid friction, upward force exerted on falling objects, objects with greater surface area experience more of this
What is air resistance?
400
the tendency of an object to resist a change in motion, depends on mass
What is inertia?
400
If one object exerts a force on another object, then the second object exerts a force of equal strength in the opposite direction on the first object.
OR
For every action, there is an equal but opposite reaction.
What is Newton's third law?
400
upward force acting on submerged object, makes object feel lighter
What is a buoyant force?
500
These do not result in a change in an object's velocity.
What are balanced forces?
500
when gravity is the only force acting on an object, causes an object to accelerate downwards
What is free fall?
500
Acceleration depends on the net force acting on the object and on the object's mass.
ALSO: acceleration=net force/mass
What is Newton's second law?
500
The total momentum of any group of objects remains the same or is conserved unless outside forces act on the objects.
What is the law of conservation of momentum?
500
The buoyant force acting on a submerged object is equal to the weight of the volume of fluid displaced by the object/