a
b
c
d
e
100
when an object is held and then released, it falls to the ground because of
gravity
100
If I used a magnet to pull a metal key across a desk from underneath, would I be using a Contact Force or a NON-Contact Force?
non contact force
100
What would be the purpose of Mrs. Thiel adding sandpaper to the tile floor by the sink?
to increase the friction between people's shoes and the floor so that they wouldn't slip
100
how does a toothbrush stay motionless in its holder?
the toothbrush and the holder push against each other with equal, balanced forces
100
The higher a ramp is the _____________ an object will roll down it
faster
200
In the parachute drop activity, what force acted on the parachute to slow the ball as it fell?
air resistance
200
If I pull someone's backpack toward me, but they pull the other way, why am I NOT able to pull them towards me?
They are pushing off the ground AND pulling their backpack in the opposite way
200
I kick a dodge ball, and the grass slows it down to a stop. This shows that the force of friction is balanced with what?
the force from my kick
200
A soccer player kicks a stationary (not moving) ball. Name some things that change about this ball
it begins moving, it's speed changes, it accelerates
200
The Y- axis and the X- axis are both on a graph. Please tell which one goes where when constructing a line graph.
300
When you're sitting on a chair, you are held up because the gravity support force and the force of gravity are
balanced
300
If two balanced forces act upon an object, the object will
stay in the same position
300
Dropping crumbled paper vs. a flat sheet of paper... which will fall faster and why
Crumbled because it has less air resistance
300
Which is a balanced force?
A truck moving at a constant speed while moving in a straight line
An airplane slowing down to make a turn
A boat speeding up while proceeding in a straight path
The truck moving at a constant speed
300
If I rolled a wooden ball down a ramp, and it rolled 10 cm from a height of 5 cm, Show me one way I could label my graph...
(see white board)
400
When a paper is lying on a desk, in which direction does the force of gravity act upon the book?
up
400
During the Tug of War field day event, Mrs. Thiel's class pulls harder than Mr. Hamill's because they are stronger. This is an example of what kind of force
unbalanced force
400
According to Newton's second law, acceleration depends on the mass of the object and...
the amount of force
400
TRUE or FALSE
I could move a box up a ramp because my force is stronger than gravity.
TRUE
400
an apple falls from a tree because of
gravity
500
If I tied a parachute to an army guy and let him fall, air resistance does what to his fall?
slows it down
500
TRUE or FALSE
No force is necessary to keep an object moving how it is already moving
TRUE
500
an increased force acting on a mass results in GREATER OR LESS acceleration
GREATER
500
A bowling ball requires more force to move it than a ping pong ball because it has
more mass
500
give an example of an UNBALANCED FORCE
GOOD EXAMPLE!