Friction
the roughness of the surfaces & the force pushing the surfaces together
What is the amount of friction between 2 surfaces
put in scientific notation 954,000,000,000
What is 9.54 *10 11
as the speed or direction changes the
What is velocity changes
formula for determining average speed
What is average speed = total distance/total tome
A push or a pull
What is a force
substances that are applied to surfaces to reduce friction
What is lubricants
you should always cut objects while holding them in your hands
What is false?
velocity must include
What is direction?
If you drive for 5 hours and travel 160 miles what is your speed?
What is 32mph
this produces no change in motion, the forces applied to an object produce a net force of zero
What is balanced forces?
a force that opposes motion between two surfaces that are touching
What is friction
the number of chromosomes each human parent give to their child
What is 23?
the speed of an object in a particular direction is the objects
What is velocity
the rate at which velocity changes
What is acceleration?
this produces a change in motion; the net force is not zero
What is unbalanced forces?
There are four of these
What is sliding, rolling, fluid and static friction
s * s = a
What is the formula for the area of a square?
velocity And speed are the same. (T or F)
What is false
a change in direction is not acceleration only a change in speed (T or F)
What is false
The force that results from combining all the forces exerted on an object
What is net force?
the type of friction that happens with a book just sitting on the desk
What is static friction?
communicate results; test the hypothesis; analyze the results; form a hypothesis; ask a question; draw conclusions
What are six steps of the Scientific Method?
an object that appears to stay in place in relation to an object being observed for motion
What is reference point?
speed
What is the rate at which an object moves
Newton (N)
What is the unit scientists express force