Question of the Day

Question of the Day

Today’s Objectives:• You will calculate how much gravitational and kinetic

energy a ball has while moving in free fall.• You will apply the law of energy conservation in order to

check for energy lost internally.

Conservation of EnergyA baseball is thrown up in the air and then falls back down. Place velocity vectors beside each corresponding baseball in the drawing, and draw an energy storage pie for each lettered position.

A B C D EGravitational Potential Energy

Elastic EnergyKinetic Energy

Internal Energy(Dissipated to Heat & Sound)

Without internal energy:

A B C D EWith internal energy:

A B C D EGravitational Potential Energy

Kinetic EnergyInternal Energy

(Dissipated to Heat & Sound)

Materials:• Computer w/ Logger Pro• LabQuest Mini (Interface)• Motion Detector• Baseball• Wire Basket

Setup & Procedure:

Conservation of Energy Lab:

Data Table:

Conservation of Energy Lab:

Mass of the Ball:(kg)

Position: Time:(s)

Height:(m)

Velocity:(m/s)

Gravitational Energy:

(J)

Kinetic Energy:

(J)

Total Energy:

(J)

Internal Energy:

(J)

After Release 0

Between Release and Top

Top of Path

Between Top and Catch

Before Catch

Additional Practice:Workbook:• p. 45 – 51