CP Ch05.5 Work-Energy Theorem

How is work done on an object?

• Apply kinetic energy over time

• Apply velocity over work

• Apply force over some distance

• Apply potential energy over distance

What does the ΔKE mean?

• constant kilograms

• change in weight

• change in potential energy

• change in kinetic energy

According to the text, what happens when an object has more kinetic energy?

• Less work is required to stop it

• The same amount of work is required to stop it

• No work is required to stop it

• More work is required to stop it

What does the work-energy theorem relate work done on an object to?

• Potential energy

• Frictional force

• Power

• Changes in kinetic energy

What does the work-energy theorem apply to in addition to changes in kinetic energy?

• Changes in momentum

• Changes in velocity

• Changes in potential energy

• Changes in temperature

If there is no change in an object's energy, then what can be concluded about the work done on it?

• Work was done on it

• No work was done on it

• Energy was lost

• Energy was gained

In the barbell weightlifter picture, when is work being done?

• when he holds the bar stationary

• when he raises the bar

• when he bends down to grab the bar

• when he drops the bar

By how much does energy increase when compared to its velocity(speed)?

• 3 x

• 2 x

• squared

• .5 x