chapter 11 test

when the net force on an object is greater than BLANK the object will accelerate in the direction of the greater force

0

what is an example of balanced forces acting on an object

a person standing on the ground

The distance traveled by an object divided by the time it takes to travel that distance is called?

average speed

because of the speed of an object can change from one instant to the next, dividing the total distance covered by the time of travel gives

average speed

on a distance vs. time graph, distance is usually the

dependent

The difference between speed and velocity is that velocity includes

direction

velocity describes both speed and

direction

the change in the position of an object is called

displacement

On a distance vs. time graph, the line of an object at rest is a

flat line with a slope of zero

Friction is defined as the

force that opposes motion between two surfaces that are touching

which is an example of kinetic friction

friction between a car's windshield and the air as you drive into the wind

the force of gravity, electromagnetic force, the strong nuclear force, and the weak nuclear force are examples of

fundamental

Force is a quantity made up of

magnitude and direction

the combination of all forces acting on an object it the

net force

one way to reduce friction in a car engine is to add an

oil

static friction is usually greater than BLANK friction

rolling and sliding

acceleration can be determined from a velocity vs. time graph by calculating the lines

slope

an object is in motion

the object changes position relative to a frame of reference

Acceleration is defined as the change in velocity divided by

time

An example of helpful friction is

writing on paper with a pen