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- Multiple ChoicePlease save your changes before editing any questions.
The force that one surface exerts on another when the two rub against each other is called
a. c.
b.. d. .
friction.
inertia.
acceleration
gravity
- Multiple ChoicePlease save your changes before editing any questions.
According to Newton’s third law of motion, when a hammer strikes and exerts force on a nail, the nail
creates a friction with the hammer.
disappears into the wood.
exerts an equal and opposite force on the hammer.
moves at a constant speed.
- Multiple ChoicePlease save your changes before editing any questions.
Define the term inertia.
the amount of matter in an object
the amount of space an object takes up
the tendency of an object to resist a change in motion, determined by mass
The force that one surface exerts on another when the two rub against each other
- Multiple ChoicePlease save your changes before editing any questions.Peanut ran 50 meters in 10 seconds. What was Peanut's average speed?2 m/s5 km/h5 m/s5 m/s North
- Multiple ChoicePlease save your changes before editing any questions.A force is a ____________________push or pullmotionspeednet force
- Multiple ChoicePlease save your changes before editing any questions.
With simple machines, you exchange force for ...
distance
energy
work
effort
- Multiple ChoicePlease save your changes before editing any questions.
Which mirror(s) create a real image?
Concave
Convex
Plane
- Multiple ChoicePlease save your changes before editing any questions.
Which mirror(s) create virtual image?
plane
concave
convex
- Multiple ChoicePlease save your changes before editing any questions.
Which is not a type of friction?
rolling
static
sliding
fluid
air
- Fill in the BlankPlease save your changes before editing any questions.
Newton's first law of Motion is
- Fill in the BlankPlease save your changes before editing any questions.
Energy is neither ________ or __________ it is _______________.
- Multiple ChoicePlease save your changes before editing any questions.
Which type of circuit only has one path?
series
parallel
combination
- Multiple ChoicePlease save your changes before editing any questions.
The highest point of a wave is the ....
crest
trough
amplitude
wavelength
- Multiple ChoicePlease save your changes before editing any questions.
The distance from red line to red line is the ...
wavelength
amplitude
crest
trough
- Multiple ChoicePlease save your changes before editing any questions.
the pivot point on a lever is called the ...
fulcrum
base
lever point
- Fill in the BlankPlease save your changes before editing any questions.
A magnet is strongest at the
- Multiple ChoicePlease save your changes before editing any questions.
In a parallel circuit, when one light bulb goes out the other light bulbs ___________
stay lit
go out
flash
- Multiple ChoicePlease save your changes before editing any questions.
to determine the mechanical advantage of a pulley system, you
count all of the ropes
you count all of the rope segments but the first
you count the ropes segments and divide by 2
- Multiple ChoicePlease save your changes before editing any questions.
True or false
In simple machines
Input work = output work
true
false
- Multiple ChoicePlease save your changes before editing any questions.
Rube Goldberg was an engineer and cartoonist who created drawings of machines that completed a ______ task in a ___________ manner.
hard, easy
simple, complex
simple, easy
hard, complex