Work, Energy & Power Quiz

Test work–energy theorem, KE, PE, and power concepts. Ideal for students preparing board exams and competitive tests.

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QUESTION NO 01

Friction always acts?

Answer: Opposite to the relative motion (or tendency)

Kinetic friction opposes relative sliding; static friction opposes the tendency to slide.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 02

In an elastic collision,

Answer: Both momentum and kinetic energy are conserved

Perfectly elastic collisions conserve both momentum and kinetic energy.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 03

Power is defined as?

Answer: Rate of doing work

Power P = W/t (or F·v).

Shahzad Mahota @shahzad-mahota

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QUESTION NO 04

Escape velocity from Earth's surface is approximately?

Answer: 11.2 km/s

Escape speed from Earth is about 11.2 km/s.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 05

Gravitational force between two masses is?

Answer: Always attractive

Newton's law of gravitation is always attractive.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 06

Centripetal force is directed?

Answer: Towards the centre of the circle

Centripetal force always points toward the centre of circular motion.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 07

Impulse equals the change in?

Answer: Momentum

Impulse J = FΔt = Δp.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 08

Momentum is the product of?

Answer: Mass and velocity

Linear momentum p = mv.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 09

Kinetic energy of a body of mass m and speed v is?

Answer: (1/2)mv²

Translational kinetic energy K = ½mv².

Shahzad Mahota @shahzad-mahota

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QUESTION NO 10

Work done is zero when force is?

Answer: Perpendicular to displacement

W = F·s·cosθ; if θ = 90°, work is zero.

Shahzad Mahota @shahzad-mahota

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430 Questions

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Work, Energy & Power Quiz

Friction always acts?

In an elastic collision,

Power is defined as?

Escape velocity from Earth's surface is approximately?

Gravitational force between two masses is?

Centripetal force is directed?

Impulse equals the change in?

Momentum is the product of?

Kinetic energy of a body of mass m and speed v is?

Work done is zero when force is?

Published By

Shahzad Mahota

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Work, Energy & Power Quiz

Friction always acts?

Explanation

In an elastic collision,

Explanation

Power is defined as?

Explanation

Escape velocity from Earth's surface is approximately?

Explanation

Gravitational force between two masses is?

Explanation

Centripetal force is directed?

Explanation

Impulse equals the change in?

Explanation

Momentum is the product of?

Explanation

Kinetic energy of a body of mass m and speed v is?

Explanation

Work done is zero when force is?

Explanation

Published By

Shahzad Mahota

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00

00

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