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Asked/Added Questions From NCERT:


Question 1. Asked on :14 July 2020:12:48:42 PM

 Which physical quantities are conserved in an elastic collision ?

-Added by Shruti Srivastva Physics » Work Energy And Power

Answer:

Shruti Srivastva

 Momentum and kinetic energy are the physical quantities conserved in an elastic collision.

-Answered by Shruti Srivastva On 14 July 2020:12:50:58 PM


Question 2. Asked on :14 July 2020:12:35:04 PM

 Is power is a scalar or vector quantity?

-Added by Shruti Srivastva Physics » Work Energy And Power

Answer:

Shruti Srivastva

 Power is a scalar quantity.

-Answered by Shruti Srivastva On 14 July 2020:12:36:06 PM


Question 3. Asked on :13 July 2020:06:25:52 PM

 Can the K.E. of a body be negative?

-Added by Shruti Srivastva Physics » Work Energy And Power

Answer:

Shruti Srivastva

 No, K.E. of a body be negative.

-Answered by Shruti Srivastva On 13 July 2020:06:27:27 PM


Question 4. Asked on :13 July 2020:05:30:03 PM

 State the factors on which the work done by a force depends.

-Added by Shruti Srivastva Physics » Work Energy And Power

Answer:

Shruti Srivastva

 (i) The magnitude of force.

(ii) The magnitude of displacement of the body.

(iii) The angle between the force and the displacement.

-Answered by Shruti Srivastva On 13 July 2020:05:31:21 PM


 

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