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Class 9 Work and Energy Quiz

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Questions and Answers

Which of the following is a scalar quantity?

Velocity

Force

Acceleration

Work (correct)

When is the work done by a force positive?

When the force is perpendicular to the displacement

When the force is applied in the opposite direction of the displacement

When the force is applied in the same direction as the displacement (correct)

When the force is applied at an angle of 45 degrees to the displacement

What is the unit of measurement for work?

Pascal

Newton

Joule (correct)

Watt

Which factor does not affect the kinetic energy of an object?

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Study Notes

Scalar and Vector Quantities

Temperature is a scalar quantity.
Time, mass, and density are also scalar quantities.

Work and Energy

Work done by a force is positive when the force and displacement are in the same direction.
The unit of measurement for work is the joule (J).
Work is a scalar quantity.

Kinetic Energy

The kinetic energy of an object is not affected by the shape of the object.

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Description

Test your knowledge on work and energy with this quiz. Answer questions about scalar quantities, positive work done by a force, factors affecting kinetic energy, and units of measurement for work.