Energy, Force, and Motion - Energy Lesson 1

Abigail is pushing a box with a certain force over a distance. What is the formula she should use to calculate the work done?

• work = force ÷ distance

• work = force × distance

• work = force + distance

• work = force - distance

Aria, Evelyn, and Liam are studying physics. They are trying to calculate the work done when a force is applied to move an object. What is the SI unit they should use for their calculation?

• joule

• ampere

• newton

• watt

Evelyn is helping Grace move a heavy box. If Evelyn applies a force of 10 N to the box and it moves a distance of 5 meters in the direction of the force, what is the work done by Evelyn?

• 50 Joules

• 25 Joules

• 2 Joules

• 100 Joules

Michael is doing his physics homework and comes across a question about power. He knows that power is the rate at which work is done or energy is transferred. Which of the following formulas should he use to calculate power?

• P = F/d

• P = mgh

• P = V/I

• P = W/t

Scarlett, Evelyn, and Aria are participating in a science quiz. They are asked to identify the SI unit of power used to measure the energy consumed by the light bulb in their science lab. What is the correct answer?

• volt

• ampere

• watt

• ohm

Elijah is operating a machine that does 1000 J of work in 10 seconds. Scarlett and Anika are curious to know, what is the power of the machine Elijah is operating?

• 10 J

• 1000 J/s

• 100 J/s

• 10 J/s

Nora is driving a car. If the car exerts a force of 5000 N and moves a distance of 20 meters while Maya and Luna are watching, what is the work done by Nora's car?

• 100,000 Nm

• 200,000 Nm

• 50,000 Nm

• 10,000 Nm

Anika, Elijah, and Sophia are conducting a physics experiment. If Elijah uses a machine that does 200 J of work in 5 seconds, what is the power of the machine?

• 10 Watts

• 100 Watts

• 50 Watts

• 40 Watts

Aria applied a force of 50 N to push a heavy box. However, Mason accidentally pulled the box 10 meters in the opposite direction. What is the work done by Aria?

• 50 Joules

• 0 Joules

• -500 Joules

• 500 Joules

Avery is operating a machine that does 500 J of work in 5 seconds. What is the power of the machine Avery is operating?

• 100 J/s

• 50 J/s

• 10 J/s

• 500 J/s