Work, Force, Distance
What is the formula for work?
Work = Force × Distance
What is the formula for power?
Power = Work / Time
What is the formula for kinetic energy?
Kinetic Energy = ½ × Mass × Velocity²
What is the formula for potential energy?
Potential Energy = Mass × Gravity × Height
What type of energy is produced when a battery is used in a circuit?
Electrical Energy
What unit is used to measure force?
Newtons (N)
If power is measured in watts and work in joules, what is the unit for time?
Seconds (S)
If a 5 kg object is moving at 10 m/s, what is its kinetic energy?
Kinetic Energy = ½ × Mass × Velocity²
250 J
What is the potential energy of a 2 kg object at a height of 5 meters?
Potential Energy = Mass × Gravity × Height
98 Joules
What energy transfer occurs when you rub your hands together?
Mechanical Energy
How do you calculate distance in the work formula?
Distance = Work / Force
How is power related to work and time?
Power is the amount of work done per unit of time.
What is the kinetic energy of a 10 kg object moving at 3 m/s?
Kinetic Energy = ½ × Mass × Velocity²
45 J
What is the potential energy of a 100 kg rock sitting 10 meters above the ground?
Potential Energy = Mass × Gravity × Height
980 J
What type of energy transfer happens when the sun heats the Earth?
Light Energy or Heat Energy
A person applies 20 N of force to move an object 5 meters. How much work is done
100 J
How much power is needed to do 500 joules of work in 10 seconds?
50 Watts
A car with a mass of 800 kg is traveling at 20 m/s. What is its kinetic energy?
Kinetic Energy = ½ × Mass × Velocity²
320,000 J
If an object has 1500 joules of potential energy, how high is it above the ground if it has a mass of 50 kg?
Potential Energy = Mass × Gravity × Height
3 m
What energy transfer is involved when a microwave heats up food?
Electrical to Thermal Energy
A force of 15 N is applied to move an object. If 75 joules of work is done, how far is the object moved?
5 m
If you perform 1000 joules of work in 2 seconds, what is the power in watts?
500 Watts
A 10 kg object is dropped with a speed of 15 m/s. What is its kinetic energy just before hitting the ground?
Kinetic Energy = ½ × Mass × Velocity²
1125 J
A 2,000 kg roller coaster is at the top of a hill that is 30 meters high. How much gravitational potential energy does the roller coaster have at the top?
Potential Energy = Mass × Gravity × Height
588,000 J
What is the energy transfer when a car's brakes convert kinetic energy into heat?
Mechanical Energy to Thermal Energy