Work
Work Calculations
Kinetic Energy
Potential Energy
100
What is the formula for work?
W= FxD
100
How much work is done on a small car if a 3000 N force is exerted to move it 10 m to the side of the road?
30,000 J
100
Which has more kinetic energy: a parked bicycle or a moving bicycle?
The moving bicycle.
100
At which position on the diagram would an apple have the greatest potential energy?
Position 1
200
A student holds a heavy backpack without moving it. Is work being done on the backpack?
No
200
A crate is being lifted into a truck. If it is moved with a 2500 N force and 5000 J of work is done, then how far is the crate being lifted?
2.00 m
200
A truck and a bicycle are moving at the same speed. Which likely has more kinetic energy?
The truck because it has more mass
200
potential energy is the energy of an object being __________.
stored
300
____ is when a force acts on an object to cause displacement of the object.
work
300
A student pushes with 35 N of force for 8 m. How much work is done?
280 J
300
Which of these has the LEAST kinetic energy?
a. house
b. a speeding car
c. a bike coasting down a hill
d. a person jumping on a trampoline
a house
300
A roller coaster moves from the bottom of a hill to the top. What happens to its potential energy?
It increases
400
A student pushes against a wall, but the wall does not move. How much work is done on the wall?
0 J
400
Sierra did 750 J of work to move her couch. If she exerts 250 N of force on the couch, how far did she move it?
3 m
400
Which point (s) show maximum kinetic energy?
C
400
What does potential energy depend on?
Height and Weight
500
The Law of Conservation of Energy
What is ENERGY CANNOT BE CREATED NOR DESTROYED ONLY TRANSFORMED
500
A worker does 240 J of work using a force of 40 N. How far did the object move?
6 m
500
Two identical balls are moving. One moves faster. Which has more kinetic energy?
The faster ball
500
A ball is dropped from a high shelf. What happens to its potential energy as it falls?
It decreases