Energy
What is energy
Property of system that enables it to do work or cause change.
What is momentum?
A vector quantity and is directional but it can be canceled.
True or false, work involves a force and distance
True
What happens to the potential energy of a roller coaster car as you are pulled up the first hill at constant speed?
Potential energy increases
Mass in motion?
Momentum
The total energy due to its position, motion, or both
Mechanical Energy
Does momentum happen everyday?
Yes (like throwing a baseball, or driving a car)
How many things are involved for work to occur?
2
What happens to the potential energy as a roller coaster car is falling down the first hill on the track?
Potential energy decreases
Energy stored for later use
Potential energy
The energy an object has due to its motion. That energy is ___
Kinetic energy
What happens to the sled if you push it down a hill?
It will accelerate and gain momentum
How is work done?
When a force causes an object to move a certain distance.
What happens to kinetic energy as a roller coaster car is pulled up the first hill at constant speed?
Kinetic energy remains constant
Energy of moving objects
Kinetic energy
Name 3 kinds of energy.
Kinetic Energy, Potential Energy and Mechanical Energy
Which vehicle has more momentum at the same speed? Truck or bicycle?
The truck because it has more mass
If you are pushing against a wall, you are doing no work on ___
The wall
What happens to the kinetic energy as a roller coaster car is falling down the first hill on the track?
Kinetic energy increases
The amount of time a force is acting on an object
Impulse
Stored Energy held by an object in its position that can be converted into other forms of energy. That energy is ____
Potential energy
What happens when two football players collide with different speeds?
The one with faster speed will knock away the other player because they have a greater momentum.
When you're walking up the stairs, you are _____
Doing work on both the person and the stairs
A rollercoaster car is pulled out of the station up the first hill and falls down to the bottom of the first hill. When does the roller coaster car have the greatest velocity?
At the bottom of the first hill
The speed and direction an object is moving
Velocity