LAW OF CONSERVATION OF ENERGY

The Law of Conservation of Energy states:

• Energy can created or destroyed but not transformed

• Energy cannot be created or destroyed, it can only transformed from one form to another form

• Energy can't be created, destroyed or transformed

• All the above

Running

Potential or kinetic?

• Potential

• Kinetic

Stretched bow and arrow is

Potential or kinetic?

• Kinetic

• Potential

What kind of energy does this device use?

• Chemical

• Electrical

• Thermal

• Mechanical

What kind of energy is represented in this picture?

• Thermal

• Potential

• Nuclear

• Mechanical

When the cart started rolling the energy transformation was ______.

• Potential to kinetic

• Kinetic to potential

• No energy was transformed

• Not defined

The unit of work is joule. The other physical quantity that has same unit is

• Power

• Velocity

• Energy

• Force

SI unit of power is _______

• Newton(N)

• Pascal(P)

• Joule

• Watt,W

SI unit of work_____

• Watt

• Joule

• Newton

• Newton meter

^{Kinetic energy formula (a)}