Work and Power

Newtons are the correct unit for which of the following?

• Force

• Work

• Power

• Acceleration

How do we calculate work?

• W = F * d

• w = F / d

Which is the correct unit for work?

• Joules

• Newton

• meter

• Watts

How do you calculate power?

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

What is the correct unit for power?

• Watt

• Joules

• Newtons

• seconds

It took 500 Newtons of force to push a car four meters. How much work was done?

• 2000 J

• 125 J

• 0.008 J

• 500 J

1. A book weighing 1.0 newton is lifted 2 meters.  How much work was done?

• 2 J
• 0.5 J

A force of 15 newtons is used to push a box along the floor a distance of 3 meters.  How much work was done?

• 3 J
• 45 J

It took 500 newtons of force to push a car 4 meters.  How much work was done?

• 2,000 J
• 125 J

How much power is used if a force of 35 Newtons is used to push a box a distance of 10 meters in five seconds? (Hint: Solve for work first. This is a 2-step problem.)

• 70 W

• 3.5 W

• 7 W

• 350 J