Physics Work and Energy Quiz

What is the scientific definition of "work" as used in physics?

• The amount of force applied on an object without moving it

• The product of force applied to an object and the distance the object moves in the direction of the force

• The speed at which an object travels

• The weight of an object times the height it is lifted

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When a force moves an object over a certain distance, what is the relationship between work and energy?

• Work decreases the object's potential energy

• Work is independent of energy

• Work done on an object results in a change in the object's energy

• Work can only change the object's kinetic energy

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If a 10 N force moves an object 5 meters, how much work is done on the object?

• 5 Joules

• 10 Joules

• 50 Joules

• 500 Joules

What is kinetic energy?

• Energy stored in an object due to its position

• Energy that an object possesses due to its motion

• Energy stored in a compressed spring

• The sum of all forms of energy in an object

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Which formula represents the work-energy principle?

• 𝑊 = 𝐹 × 𝑑

• Δ𝐾𝐸 = 𝑊

• 𝑃𝐸 = 𝑚 × 𝑔 × ℎ

• 𝑃 = 𝑊 / 𝑡

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If a car's speed doubles, what happens to its kinetic energy?

• It doubles

• It triples

• It quadruples

• It remains the same

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What concept of work being done to change an object's energy?

• A person lifting a box

• A car accelerating down the road

• A ball being thrown into the air

• A book sliding across a table

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Which of the following scenarios best demonstrates work being done on an object?

• Holding a book still at shoulder height

• Pushing a wall with all your strength

• Lifting a weight off the ground

• Sitting still in a chair

What is the unit of work in the International System of Units (SI)?

• Newton

• Joule

• Watt

• Meter per second

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What does the work-energy theorem state?

• The total energy in a system is always constant

• The work done on an object is equal to the change in its kinetic energy

• Potential energy can be converted to kinetic energy, but not vice versa

• Only conservative forces can do work on an object

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