Andhra Pradesh (English Medium) Std 9 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
Find the energy possessed by an object of mass 10 kg when it is at a height of 6 m above the ground.

Given, g = 9.8 m/s²

(A) 858 J	(B) 688 J
(C) 588 J	(D) 600 J

Question-2
The meaning of the Greek word "Energia" is

(A) Power.	(B) Work.
(C) Energy.	(D) Transformation.

Question-3
A bullet of mass 0.2kg is fired with a velocity of 100ms^-1 .What is the kinetic energy?

(A) 10000J	(B) 1000J
(C) 10000erg	(D) 1000erg

Question-4
A compressed spring possesses _________ energy.

(A) Kinetic	(B) Elastic potential
(C) Electric	(D) Magnetic

Question-5
An engine of 9.8 kw power is to pump water from a well of 90m depth. Calculate the quantity of water it can pump out in one hour?

(A) 40,000g.	(B) 4000kg.
(C) 4000g.	(D) 40,000kg.

Question-6
What is the work done by a man in carrying a stone of mass 25kg in his head when he travels a distance of 15m in the vertical direction?

(A) 3600J	(B) 3675J
(C) 375J	(D) 3075J

Question-7
The energy possessed by a body due to its motion is called ________________.

(A) Static energy	(B) Kinetic energy.
(C) Potential energy	(D) None of these

Question-8
A force of 7N acts on an object. The displacement is 8m in the direction of force. What is the work done?

(A) 24 J	(B) 56 J
(C) 64 J	(D) None of these

Question-9
Which of the following is a scalar quantity?

(A) Work.	(B) Velocity.
(C) Acceleration.	(D) Force.

Question-10
What is the velocity of body of mass 100g having a K.E of 20 J ?

(A) 2ms^-1	(B) 20m/s
(C) 40ms^-1	(D) None of these

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Std 9

Andhra Pradesh (English Medium)

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