Work and Energy

Work and Energy

By Eliza Batt

Multiple Choice

What is the equation for work?

• W = f * d

• W = d * t

• W = f * a

• W = m * a

Multiple Choice

What is the unit for work?

• Jewels

• Joules

• gems

• rubies

Multiple Choice

Solve for work?

Someone is pushing a car with a force of 17 N for 5.32 meters, for 18 seconds. $$W\ =\ FORCE\cdot DISTANCE\$$  

• 90.44 J

• 90.44 N

• 1627.9 J

• 306 J

Open Ended

What is the kinetic energy of a 65kg bowling ball, rolling down a hill at 5.4 m/s?

Multiple Choice

What is the potential energy of a 23 kg paper air plane that is sitting on a shelf 350 cm off the ground?

• 788.9 J

• 78,890 J

• 8,050 J

Open Ended

Two people are climbing up to the same point in a tower. The old man uses the ramp and takes a much longer time. The young man climbs up 154 steps in a much shorter amount of time. Who does more work?

Multiple Choice

A person pushes a box with a force of 45 J for 3.4 meters, for 2 minutes. How much power do they use?

• 1.26 W

• 76.5 W

• 306 W

• 153 W

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Open Ended

What does the law of conservation of energy state?