Kinetic Energy
What is Kinetic Energy?
Energy of Motion
Holding an object above the ground uses what force to increase potential energy?
gravity
What is speed?
How fast something is moving (changing position)
What is distance (in relation to motion)?
How far an object has traveled
Gasoline in a motorcycle that is not running is an example of what?
Chemical potential energy
True or False (and explain)
A rolling soccer ball has kinetic energy.
True, because it is moving
what is potential energy?
stored energy that depends on position or condition
What is the equation for finding speed?
Speed=distance / Time
What does a flat (horizontal) line show on a motion graph?
object is NOT moving
Two lines running perpendicular to each other (example on board) shows what?
Objects traveling at the same rate of speed
Which of these increases kinetic energy? explain
decreasing mass
increasing speed
decreasing speed
increasing speed
What type of energy does a stretched rubber band have?
elastic potential
If a runner covers 100m in in 20s, how fast is he running?
5 meters per second
A straight line sloping upwards on a motion graph shows what?
Constant Speed
An object slowing down is an example of what?
negative acceleration (deceleration)
How would rolling a ball down a ramp affect the kinetic energy of the ball?
It would increase the kinetic energy
A roller coaster going uphill is doing what to the potential and kinetic energy?
increasing potential and decreasing kinetic
What is the difference between speed and velocity?
Velocity is speed plus direction
Sketch a simple graph that shows an object traveling at a constant rate then stopping for a while, then returning to a constant rate
show on board
Give a real life example of acceleration and negative acceleration (deceleration)
Give two examples
A skateboarder going twice as fast as as another skateboarder of the same mass would do what to the kinetic energy?
They would have twice as much kinetic energy.
A book is sitting on a shelf. Name two ways to change its potential energy.
raising it up would increase its potential energy.
placing it on a lower shelf would decrease its potential energy.
knocking it off the shelf would transform the potential to kinetic
How fast is a car traveling if it goes 200miles in 4 hours?
50 miles per hour
Sketch a simple graph of an object accelerating and another object decelerating
sketch on board
A table like sketch on a motion graph shows what?
(example on board)
The object had constant motion, then stopped, then had constant motion returning to the starting point