Work, energy, power

A force exerted over a distance to move an object is ______________________.

• power
• work
• momentum
• Watt

 Work done = Force x _________

• a. distance
• b. acceleration
• c. velocity
• d. speed

A 5000N block is lifted 10 m. How much work was done?

• 50000 J
• 5000 J
• 500 J
• 50 J

This is work divided by time.

• Work
• Distance
• Power

What is the definition of power?

• the amount of work an object does
• the rate at which force is applied
• the amount of matter in an object
• the rate at which work is done

What is a unit of power?

• Ohm

• Ampere (A)

• Volt (V)

• Watt (W)

Units of work are...

• Newtons

• Grams

• Joules

• Meters

If 40N of force is applied to Rollo Koster's 10 kg cart over a distance of 50 meters, how much work is done?

• 8000 J

• 8000 N

• 4000 J

• 2000 J

If the mystery machine moves 100 meters how much work is done?

• 130,000,000 J

• 70,000 J

• 100,000 J

• 30,000 J

If Jay Loppy pushes his van 20 meters how much work is done?

• 2,000 J

• 40,000 J

• 10,000 J

• 800,000 J