Show:
Live wire
The mechanics
Moving right along
Tupperware
Not letting go
100
Applying a force I order to move an object in a given direction.
What is Work
100
The energy of motion
What is Kinetic Energy
100
Gravitational Potential Energy is determined by
What is Mass, gravity and height
100
The two factors that determine Elastic Potential Energy
What is the elasticity of the material and how far it is stretched or compressed.
100
In order for an object's Kinetic Energy to increase, it must take energy from its stored energy, Potential Energy. When this happens, the Potential Energy that an object possesses decreases. When this happens, the Total Energy in that closed system does not change. This is called...
What is Conservation of Energy.
200
Unit of measure for energy and work
What is Joule (J)
200
Two forms of stored energy
What is Gravitational and Elastic
200
A 3,000 kg hot air balloon is hovering at a height of 100 m above Earth's surface. How much Gravitational Potential Energy does it possess?
What is 294,000,000J
200
A spring is compressed 0.035 m inside a dart gun. What is the potential energy of the spring? (k = 500 N/m)
What is 0.30625J
200
An energy resource that cannot be replaced is
What is Non-renewable
300
When a force is applied which causes an object to speed up and move a distance, the work is
What is positive
300
The amount of Kinetic Energy that an object possesses is dependent on?
What is Mass and Velocity
300
A 3kg object and a 9kg object are both dropped from the same height. Which has more GPE?
What is 9kg object
300
If the spring constant is halved, by what factor does the EPE decrease?
What is 1/2
300
Katniss Everdeen pulls her bow back to take a shot at President Snow. If her bow has a spring constant of 95N/m, and she pulls back the bow 0.5 m, how much energy does the 0.15 kg arrow store?
What is 11.875J
400
A woman walks across an icy sidewalk that has been covered in salt to help make it less slippery. Is the salt doing positive or negative work on the woman's shoes?
What is positive
400
A 50kg girl rode her 12 kg bicycle in a race. She started from rest and peddled with a velocity of 10 m/s. What is the change in Kinetic Energy of the girl and her bicycle?
What is 3100J
400
A bowling ball which has a mass that is 30 times larger than a softball, is lifted to the same height as the softball. How much larger is the Gravitational Potential Energy for the bowling ball compared to the softball?
What is 30 times as large
400
The same spring is stretched by 1 meter and then compressed by 1 meter. In which case will the spring have more Elastic Potential Energy stored in it? Explain.
What is The spring will have the same EPE stored in it because the distance it is stretched is the same as it is compressed.
400
Use the picture to answer the question: The car is moving at 4 m/s at position A (50 m above ground level). It has a mass of 1000 kg and is rolling along the hills in neutral. Point B is at ground level. What is the total energy of the car at point A?
What is 490,000J
500
The energy of an object due to its motion and position.
What is Mechanical energy
500
Three different vehicles are noticed driving on the highway at a speed of 25 m/s. Which will have the most kinetic energy at that moment, a motorcycle, a minivan, a semi truck, they all have the same kinetic energy
What is the Semi truck
500
The gravitational potential energy of a 450 kg car at the top of a 25 m parking garage.
What is 110,250J
500
Two springs are stretched to the same distance. If spring A has a spring constant of 200 N/m and spring B has a spring constant of 400 N/m, which spring has more Elastic Potential Energy stored in it? Explain.
What is The 400N/m spring has more EPE because it is larger.
500
Using the picture: At what point(s) is the total energy at a minimum? At what point(s) is the total energy at a maximum?
What is All points are the same - total energy is the same throughout the system