Work
Fundamentals
Fundamentals
Work = Force x Distance
What is the equation for force?
Force = Work/Distance
Tommy is on a roller coaster; when is his kinetic energy the highest?
At the lowest point
This is the type of kinetic energy that allows us to see Luke's beautiful face
Electromagnetic energy
Avery exerts 2,500 J of work and a force of 500 N on Luke as she pushes him uphill. How far did she push him?
5 m
Calculate the KE of Leo (with a mass of 9 kg) about to reach the ground after falling from a height of 4 m
KE = (1/2)mv2
360 J
What is the transfer of energy called?
Work
What is the ability to do work?
Energy
This is the type of kinetic energy in Emmett after falling down a hill
Motion energy
Scott is dragging Isaias with a force of 50 N across 2 m. How much work is Scott doing?
100 J
Abby is about to drop a 20 kg brick on Levi from 1.2 m above. How much potential energy does the brick have?
PE = mgh
240 J
Avery is holding Rylee at a stable height above the ground, how much work is being done?
No work
Which of the two main types of energy is stored energy?
Potential energy
This is the type of kinetic energy that makes Havilah scream when she touches boiling water
Thermal energy
Tommy does 150 J on Leo while stuffing him in a locker 5 m away. How much force was necessary?
30 N
AJ is driving a 2,000 kg truck moving at 20 m/s straight towards Scott's house. What is his kinetic energy?
KE = (1/2)mv2
400,000 J
Isaias is pushing Levi to the left. If work is being done on Levi, then what direction must the force be pointing?
To the left
What is the law of conservation of energy?
Energy cannot be created or destroyed
This is the type of potential energy in Brayden when he is about to be burned
Chemical energy
Abby builds a rocket ship that exerts 5 N of force and makes it in the air 8 m. How much work did the ship do?
40 J
James is on a 40kg roller coaster of a 15 m hill. Calculate its potential energy.
PE = mgh
6,000 J
Chary is floating away in space with a constant velocity. How much work is being on her?
No work
What are the two main types of energy?
Potential and Kinetic
This is the type of potential energy in Rodrigo after he has been squished like a spring
Elastic energy
James exerts a force of 20 N, doing 100 J of work while stomping Rylee into the ground. How far down did she go?
5 m
Xander is about to run Beatrice over in a 2,000 kg moving at 5 m/s. What is his kinetic energy?
KE = (1/2)mv2
25,000 J