Studied by 2 people
Weight
________ is the gravitational force exerted by the Earth onto an object.
gravitational field
The ________ is strength greater at the poles than at the equator.
Gravity
________ is a force that operates at a distance and pulls on objects without actually coming into contact with them.
Inertia
________ is an attribute of matter that makes it resistant to changes in motion.
Non
________- contact force: a force that occurs between objects without them touching.
Object motion
________ is unaffected by internal forces.
Mass
________ is the quantity of matter in an object.
Earth
As the ________ is not a perfect sphere, gravity depends on the geographic location of an object.
Acceleration
________ is equal to gravity in the downwards direction.
net force
If the ________ acting on an object is zero, that object maintains its state of rest or constant velocity.
Fnet
________ is the net force.
Masses
________ will always be attracted to Earth when it interacts with the force field.
Friction
________ can be both a good and bad thing.
Kinetic friction acts
________ on any object that is in motion.
Static Friction
________: acts between surfaces at rest but tends to move.
Free Body Diagram
A(n) ________ (FBD) is a drawing of a single object that shows only the forces (as vectors) acting on that object.
Kinetic Friction
________: acts between surfaces moving over each other.
mud particles
The ________ accelerate from rest to some velocity when the leg is pushed downward.
system diagram
A(n) ________ is a sketch of all of the objects involved in a situation.
direction of motion
The force exerted on a moving objects by a surface opposite to the ________.
Air resistance
________ is greater for larger cross- sectional areas than for smaller cross- sectional areas.
pickup truck
When a(n) ________ is moving, you shouldn't stand in the back (bed) of the vehicle.
Contact Force
a force that occurs in between two objects when they touch
Non-contact force
a force that occurs between objects without them touching
example
pushing a box
Value
9.8 m/s^2 [down]
Example
a box at rest
Static Friction
acts between surfaces at rest but tends to move
Kinetic Friction
acts between surfaces moving over each other
Note 
Flashcard (173)