Asked/Added Questions From NCERT:

 m₁v₁=m₂v_2 ⇒ v₁: v_{2 =} m₂:m₁ = 4:2 =2:1

-Answered by Shruti Srivastva On 13 July 2020:01:55:02 PM

 Is the force of reaction on a body due to the surface on which it is placed. It acts perpendicular on the surface of contact.

-Answered by Shruti Srivastva On 11 July 2020:06:32:54 PM

 The orce of friction between solid surface in contact is called dry friction.

-Answered by Shruti Srivastva On 11 July 2020:06:29:28 PM

 1 newton = 10⁵ dyne.

-Answered by Shruti Srivastva On 11 July 2020:02:07:57 PM

 One dyne is defined as the force which produces an acceleration of 1cms^-2 in a body of mass 1 gram.

-Answered by Shruti Srivastva On 11 July 2020:02:05:29 PM

 One Newton is defined as the force which produces an acceleration to 1 cms^-2 in a body of mass 1 gram.

-Answered by Shruti Srivastva On 11 July 2020:02:03:03 PM

 Newton's second law of motion states that the rate of change of momentum of a body is directly proportional to the applied force and the change in momentum takes takes place in the direction of the applied force.

-Answered by Shruti Srivastva On 11 July 2020:01:59:07 PM

 The ratio of SI to the CGS units of momentum 10⁵

-Answered by Shruti Srivastva On 11 July 2020:01:56:41 PM

 The SI unit of momentum is kg ms^-1 and CGS unit of momentum is g cms^-1.

-Answered by Shruti Srivastva On 11 July 2020:01:54:09 PM

 [MLT^-1]

-Answered by Shruti Srivastva On 11 July 2020:01:51:56 PM

 Issac Newton.

-Answered by Shruti Srivastva On 11 July 2020:01:50:46 PM

 Zero. because the weight of the piece of cork is balanced by the upthrust of water on it.

-Answered by Shruti Srivastva On 11 July 2020:01:45:38 PM

 According to Newton's first law of motion, every body continues in its state of rest or of uniform motion, unless an external force is applied to change that state.

-Answered by Shruti Srivastva On 11 July 2020:01:41:48 PM

 Issac Newton.

-Answered by Shruti Srivastva On 11 July 2020:01:39:43 PM

 Internal mass of a body is equal to the force required to produce unit acceleration in the body.

-Answered by Shruti Srivastva On 11 July 2020:01:36:46 PM

 Mass of a body.

-Answered by Shruti Srivastva On 11 July 2020:01:35:31 PM

 Inertia is the inherent property of a material body by virtue of which it cannot change, by itself, its state of rest of uniform motion in a straight line.

-Answered by Shruti Srivastva On 11 July 2020:01:32:03 PM

 A body moving in a straight line with a certain speed will continue moving in the same straight line with the same speed in the absence of any external force.

-Answered by Shruti Srivastva On 11 July 2020:01:29:30 PM