Gravity Baby!
What is gravity?
The force of attraction between all objects in the universe.
What is force?
a push or pull
What is Newton's 3rd law?
for every action there is an equal an opposite reaction.
What is friction?
a force that resists an object forward motion
What is lift?
how things get off the ground
All objects free fall at what rate?
9.8 m/s2
What is Centripetal Force?
An unbalanced force that causes objects to move in a circular path.
What is Newton's 1st law?
Objects at rest remain at rest.
What two factors that affect friction?
The weight of the two surfaces and the surface itself.
What is thrust?
The force to push a flying thing forward (airplace flying)
Galileo dropped a large rock and a small rock off the leaning tower of Pisa...which fell first and why?
They landed at the same time, because all objects fall at the same time because of gravity.
What are four fundamental forces of nature?
Gravity, Electromagnetism, Strong nuclear force and weak nuclear force.
What is Newton's 2nd law?
force = mass x Acceleration
What are two types of friction and describe each?
Kinetic (moving) and Static (non-moving)
What is orbit?
the path of one object around another in space.
What is free fall?
When the only force acting on an object is gravity.
What are two forces that are acting on you right now?
Gravity (acts down) and normal force (acts up)
What is momentum?
How fast the object is kicked (kicking a soccer ball)
What are the three types of kinetic friction?
sliding, rolling and fluid
What is Projectile Motion?
the curved path of a thrown object near Earth's surface.
What is Air Resistance (Drag)?
A type of fluid friction experience when an object moves through the air.
What is inertia?
the resistance of an object to change its state of motion.
What is a vacuum?
a place where no particles of mass exist (the moon)
What affects acceleration?
speed or direction
What is terminal velocity?
the constant velocity of a falling object when the force of gravity is speeding up by air resistance.