WEP PHYICS PRACTICE QUESTIONS

Which situation is work not done?

• lifting a 20 pound box off the floor
• holding a 20 pound box above the floor
• sliding a 20 pound box across the floor
• sliding a 20 pound box up an inclined plane

What is the unit of measurement for power?

• Joules
• Watts
• Voltage
• Calories

Kinetic energy is associated with ---.

• speed

• position

• direction

• temperature

How do you calculate power?

• P = W/t
• P = E/t
• P = w * t
• P = bbq/chicken

Pushing against the wall. Is it an example of work?

• NO

• YES

• MAYBE

• I am not sure

Where does the pendulum have the least amount of potential energy?

• A

• B

• C

• D

• E

How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?

• 15 J
• 45 J
• 0 J
• 5 J

what is defined as the product of the magnitudes of displacement and the

component of the force parallel to the displacement ?

• work

• energy

• momentum

• power

Potential energy is associated with ---.

• speed

• position

• direction

• temperature

A 40-kg person is climbing 3 m up a flight of stairs in 6 seconds. How much work did they do climbing the stairs?

• 400 J

• 1200 J

• 200 J

• 120 J