Velocity
What is another word for velocity?
Speed
What is another word for "accelerating"?
speeding up
What does an object need to have in order to have gravity?
mass
On the moon, when you drop a hammer and feather at the same time from the same height, what happens?
Both hit the ground at the same time.
Who is the fastest human?
Usain Bolt
What unit is used for velocity?
m/s (meters per second)
What unit is used for acceleration?
m/s2 (meters per second squared)
True or False: Gravity speeds up objects as they fall.
True
When we drop a hammer and feather in the classroom, what slows the feather down?
Air / air resistance
Peregrine Falcon
What does the symbol "Δx" (delta x) represent?
change in position
slowing down
Because of Earth's gravity, things with more mass feel ____.
heavier
Spread out their arms and legs
What was the fastest manned craft?
Apollo 10
What does the symbol "Δt" represent?
change in time
What is the acceleration formula?
acceleration equals change in velocity divided by change in time
What did Galileo discover about gravity?
All objects fall at the same speed
What do we call the maximum (fastest) speed something can fall through air?
terminal velocity
What is the fastest man-made object?
Parker Solar Probe
What is the velocity equation?
Velocity equals distance divided by time.
How do you calculate Δv (change in velocity)?
(final speed) minus (starting speed)
What did Aristotle say about gravity that ended up being wrong?
Aristotle thought heavier objects fall faster than lighter objects no matter what.
What formula should we use to calculate something falling?
Acceleration formula
What is the fastest car?
Koenigsegg Jesko Absolut