Energy
Kinetic energy is
the energy of motion
Define Mass
the amount of matter in an object
Define velocity
speed and direction
Define Friction
a force that resists motion made when two solid surfaces rub against each other
What shoe did Cinderella lose
The left shoe
Potential energy is
stored energy based-on position
If you are moving your inertia wants to _________
and if you are not moving (at rest) your inertia wants to _____________
keep moving
stay at rest
Force = ______ X _________
Force = mass X acceleration
The third law states: for every action
there is an equal and opposite reaction
What NFL team has a logo only on one side of their helmet?
Steelers
If you measure thermal energy you are measuring
the amount of heat
How are mass and inertia related?
If mass increases inertia increases, if mass decreases then inertia decreases.
If you drop a ping pong ball and a bowling ball at the same time from the same height which will hit the ground first?
they will hit at the same time
Label the action and reaction if someone is swimming laps in a pool
The stroke pushing the water backwards is the action and the water pushing the person forward is the reaction
What body part can dogs sweat out of?
Their paws
As a rock rolls faster and faster down a hill how does the type of energy change
potential to kinetic
or
kinetic to thermal
Your inertial wants to keep moving you in the same direction so you lose your balance.
If you drop a ping pong ball and a bowling ball at the same time from the same height will they hit with different amounts of force? Explain
The bowling ball will hit with more force because it has more mass.
force = mass X acceleration
If the action and reaction are the same strength why does one object move more than the other sometimes.
Mass, friction etc
In NY it is illegal to do what in an elevator?
talk
On a roller coaster, why does the car eventually run out of energy?
Friction converts kinetic energy to thermal energy
Give two real life examples of Inertia (first law).
answers will vary
If you apply the same amount of force to two objects of different masses, which one will accelerate faster?
the object with less mass
If i let go of an inflated balloon what is the action and reaction?
the action is the air leaving the balloon
the reaction is the balloon getting pushed forwards
In the 1830's ketchup was sold as a
medicine