Kinetic Energy
Potential Energy
Graphical and Mathematical Analysis
100
Write down 4 types of kinetic energy.
Thermal, Electromagnetic, Sound and Electrical energy
100
Write down 4 different forms of potential energy.
Elastic, chemical, nuclear and gravitational potential energy.
100
How do you know if two variables have a linear relationship?
If the graph shows a straight line, the variables have linear relationships.
200
Which factor has a linear relationship with kinetic energy?
Mass has a linear relationship with kinetic energy.
200
Which factor has a linear relationship with the potential energy of an object?
An object's mass and height have linear relationships with the potential energy of an object.
200
How do you know if two variables are proportional to each other mathmatically?
Two variables are proportional if they are changing at the same rate.
300
Which factor has a non-linear relationship with kinetic energy?
Speed has a non-linear relationship with kinetic energy.
300
Which factor has a proportional relationship with potential energy of an object?
Mass and height have proportional relationship with the potential energy of an object.
300
Which graph below shows
a linear relationship?
Graph A shows a linear relationship.
400
How does mass and speed affect the kinetic energy of an object?
The kinetic energy of an object increase when the mass and speed increase.
400
How does mass and height affect the potential energy of an object?
The higher the mass and height, the higher the potential energy.
400
Does the data in the table show proportional relationships? Why?
The data in the table shows proportional relationships because the rate of change for x and y variables are the same.
500
Calculate the kinetic energy of a 50g object travelling at 10m/s. You must show all your work to receive points.
Ek=1/2*m*V2
Ek=1/2*0.05kg*(10m/s)2
Ek=2.5J
500
Calculate the potential energy of a 1kg object if it is held 5m above the floor.
Ep=mgh
Ep=(1kg)(9.8m/s2)(5m)
Ep=49J
500
What is the relationship between linearity and proportionality? Write one statement summarizing the relationship.
Proportional relationships are linear.