What would happen in a world without friction?
everything would stop
everything would keep moving
An object in motion stays in motion until a ________ acts on it.
velocity
force
speed
rest
An object at rest
stays at rest
keeps moving
runs away
falls off the table
a change in speed or direction
velocity
acceleration
speed
You look up in the sky and see a bird fly by. What is a good reference point to use to know that the bird is in motion?
a moving car
tree
an airplane
clouds
The balloon is traveling 20 mph to the northwest
acceleration
velocity
speed
Which is NOT an example of acceleration?
changing direction
speeding up
slowing down
maintaining a constant speed
the racer slowed as he approached the turn
velocity
speed
acceleration
A car is driving 55 mph
velocity
speed
acceleration
Which equation would we use to calculate speed?
time / distance
distance / time
distance / velocity
An object in motion
stays in motion
goes to sleep
slows down
speeds up
Motion is defined as a change in ....
position
location
speed
movement
Reference points are objects that
slow down an object
speed faster than the object
move with the object
are completely still
how fast or slow an object is moving
acceleration
velocity
speed
the speed and direction of an object
acceleration
speed
velocity
What would happen if you were in a car accident and not wearing your seatbelt?
You would stop when the car keeps moving
Nothing would happen
You would keep moving when the car stops