Solving Energy Problemss

When a problem occurs on the ground, this means:

• Kinetic energy can be set to zero

• Velocity is higher than normal

• Velocity is lower than normal

• Potential Energy can be set to zero

When an object COMES to rest,

• Final potential energy is zero

• Final Kinetic energy is zero

• Initial potential energy is zero

• Initial Kinetic energy is zero

When an object STARTS AT rest,

• Final potential energy is zero

• Final Kinetic energy is zero

• Initial potential energy is zero

• Initial Kinetic energy is zero

When a problem occurs on Earth, this means:

• Gravity is not equal to 9.8 m/s^2

• Gravity is lower than 9.8 m/s^2

• Gravity is higher than 9.8 m/s^2

• Gravity is equal to 9.8 m/s^2

When a problem occurs on Jupiter, this means:

• Gravity is not equal to 9.8 m/s^2

• Gravity is lower than 9.8 m/s^2

• Gravity is higher than 9.8 m/s^2

• Gravity is equal to 9.8 m/s^2

When an object ends up on the ground,

• Final potential energy is zero

• Final Kinetic energy is zero

• Initial potential energy is zero

• Initial Kinetic energy is zero

When an object starts on the ground,

• Final potential energy is zero

• Final Kinetic energy is zero

• Initial potential energy is zero

• Initial Kinetic energy is zero

When a spring is relaxed,

• Spring constant K can be set to zero

• Elastic energy cannot be set to zero

• Elastic energy can be set to zero

• Kinetic energy can be set to zero

When a spring is stretched/compressed,

• Spring constant K can be set to zero

• Elastic energy cannot be set to zero

• Elastic energy can be set to zero

• Kinetic energy can be set to zero

If a problem contains mass and velocity, we will probably use:

• Potential energy formula

• Kinetic energy formula

• Elastic energy formula

• Law of conservation of energy formula