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Motion in Straight Line

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Physics Part I

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Physics

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

A body of mass m is accelerated uniformly from rest to a speed v in a time T. The instantaneous power delivered to the body as a function time is given by

  • fraction numerator mv squared over denominator straight T squared. end fraction straight t
  • mv squared over straight T squared. straight t squared
  • 1 half mv squared over straight T squared. straight t
  • 1 half fraction numerator mv squared over denominator straight T squared. end fraction straight t squared

A.

fraction numerator mv squared over denominator straight T squared. end fraction straight t
equals space ma squared straight t
equals space straight m straight V squared over straight T squared straight t
equals space ma squared straight t
equals space straight m straight V squared over straight T squared straight t
272 Views

What is rest?

When an object does not change its position with time, with respect to it's surroundings. In such a case the object is said to be at rest. 
1215 Views

What is motion?

When an object changes it's position with time, with respect to it's surroundings, the object is said to be in motion. 
657 Views

What is the most essential thing to study the motion of a body?

The most essential thing to study the motion is reference frame. Rest and motion are relative terms. It means that an object in one situation can be in rest but in another situation, the same object will be in motion. 
650 Views

Is absolute rest or absolute motion possible?

Absolute rest and absolute motion is not possible because there is no point in the universe which is at rest and can be taken as point of reference. The planet Earth is in continuous motion. 
1986 Views

Can a body be always at rest in some frame?

Yes, a body is always at rest in a frame which is fixed with the body itself. 
746 Views

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