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Question (1)

QN006332

Mechanical energy is the sum of:

(A) Heat energy and light energy
(B) Kinetic energy and potential energy
(C) Sound energy and electrical energy
(D) Chemical energy and nuclear energy

Correct Answer: B

Explanation:

Mechanical energy = kinetic energy + potential energy.

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Question (2)

QN006333

A moving car possesses mainly:

(A) Potential energy
(B) Mechanical energy
(C) Nuclear energy
(D) Chemical energy only

Correct Answer: B

Explanation:

A moving object possesses kinetic energy.

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Question (3)

QN006334

The SI unit of mechanical energy is:

(A) Newton
(B) Watt
(C) Joule
(D) Pascal

Correct Answer: C

Explanation:

Energy is measured in joules.

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Question (4)

QN006335

A stone kept at a height possesses:

(A) Electrical energy
(B) Gravitational potential energy
(C) Sound energy
(D) Nuclear energy

Correct Answer: B

Explanation:

Energy due to height is gravitational potential energy.

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Question (5)

QN006336

The kinetic energy of an object depends on:

(A) Height only
(B) Shape only
(C) Mass and velocity
(D) Temperature only

Correct Answer: C

Explanation:

Kinetic energy depends on mass and speed.

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Question (6)

QN006337

The formula for kinetic energy is:

(A) mgh
(B) ½mv²
(C) Fd
(D) mv

Correct Answer: B

Explanation:

KE = ½mv².

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Question (7)

QN006338

The formula for gravitational potential energy is:

(A) mv²
(B) mgh
(C) F/t
(D) ma

Correct Answer: B

Explanation:

PE = mgh.

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Question (8)

QN006339

A 2 kg object moving at 5 m/s has kinetic energy:

(A) 10 J
(B) 20 J
(C) 25 J
(D) 50 J

Correct Answer: C

Explanation:

KE = ½ × 2 × 5² = 25 J.

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Question (9)

QN006340

A 4 kg body raised to a height of 5 m has potential energy:

(A) 20 J
(B) 100 J
(C) 200 J
(D) 50 J

Correct Answer: C

Explanation:

PE = 4 × 10 × 5 = 200 J.

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Question (10)

QN006341

If the speed of an object doubles, its kinetic energy becomes:

(A) Double
(B) Half
(C) Four times
(D) Eight times

Correct Answer: C

Explanation:

KE ∝ v².

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Question (1)

Mechanical energy is the sum of:

Explanation:

Link:

Question (2)

A moving car possesses mainly:

Explanation:

Link:

Question (3)

The SI unit of mechanical energy is:

Explanation:

Link:

Question (4)

A stone kept at a height possesses:

Explanation:

Link:

Question (5)

The kinetic energy of an object depends on:

Explanation:

Link:

Question (6)

The formula for kinetic energy is:

Explanation:

Link:

Question (7)

The formula for gravitational potential energy is:

Explanation:

Link:

Question (8)

A 2 kg object moving at 5 m/s has kinetic energy:

Explanation:

Link:

Question (9)

A 4 kg body raised to a height of 5 m has potential energy:

Explanation:

Link:

Question (10)

If the speed of an object doubles, its kinetic energy becomes:

Explanation:

Link:

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