Example of Energy Transferred Into and Out of a System

The video tutorial explores energy transfer in a physics context, using a block on a surface as an example. It covers the calculation of forces, acceleration, and velocity, and examines work done by various forces. The tutorial also discusses changes in internal and kinetic energy, demonstrating that the energy transferred to the block equals the change in its energy. The session concludes with a summary of the concepts and equations used.

What is the initial velocity of the block in the given problem?

• 15 m/s

• 10 m/s

• 5 m/s

• 0 m/s

At what angle is the force applied to the block?

• 15 degrees

• 45 degrees

• 35 degrees

• 25 degrees

Which force acts in the negative Y direction on the block?

• Force applied

• Force of kinetic friction

• Force normal

• Force of gravity

How is the force applied in the X direction calculated?

• Force applied divided by cosine Theta

• Force applied times cosine Theta

• Force applied divided by sine Theta

• Force applied times sine Theta

What is the final velocity of the block after displacement?

• 2.5 m/s

• 3.5 m/s

• 4.18 m/s

• 5.5 m/s

Which force does no work on the block?

• Force of kinetic friction

• Force of gravity

• None of the above

• Force applied

What is the change in internal energy of the block?

• 100 Joules

• 65.5 Joules

• 200 Joules

• 141 Joules

How is the change in kinetic energy of the block calculated?

• Using the dot product

• Using the cross product

• Using the work-energy principle

• Using the potential energy formula

What is the total work done on the block by the force applied?

• 100 Joules

• 150 Joules

• 250 Joules

• 206 Joules

What principle is used to verify the energy transfer to the block?

• Hooke's Law

• Work-Energy Principle

• Conservation of Momentum

• Newton's First Law