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Motion in A Plane

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Physics Part I

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Physics

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Class 10 Class 12

A car starting from rest accelerates at the rate f through a distance S, then continues at constant speed for time t and then decelerates at the rate f/2 to come to rest. If the total distance traversed is 15 S, then

  • S=ft

  • S= ft2/72

  • S = 1/2 ft2

  • S = 1/4 ft2


B.

S= ft2/72



straight S space equals space fraction numerator ft subscript 1 superscript 2 over denominator 2 end fraction
straight v subscript straight o space equals square root of 2 Sf end root
During space retardation
straight S subscript 2 space equals space 2 straight S
During space constant space velocity
15 straight S space minus 3 straight S space equals space 12 space straight S space equals straight v subscript straight o straight t
rightwards double arrow space straight S space equals ft squared over 72


straight S space equals space fraction numerator ft subscript 1 superscript 2 over denominator 2 end fraction
straight v subscript straight o space equals square root of 2 Sf end root
During space retardation
straight S subscript 2 space equals space 2 straight S
During space constant space velocity
15 straight S space minus 3 straight S space equals space 12 space straight S space equals straight v subscript straight o straight t
rightwards double arrow space straight S space equals ft squared over 72
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Give three examples of scalar quantities.

Mass, temperature and energy
769 Views

What is a scalar quantity?

A physical quantity that requires only magnitude for its complete specification is called a scalar quantity.
1212 Views

What are the basic characteristics that a quantity must possess so that it may be a vector quantity?

A quantity must possess the direction and must follow the vector axioms. Any quantity that follows the vector axioms are classified as vectors. 


814 Views

Give three examples of vector quantities.

Force, impulse and momentum.
865 Views

What is a vector quantity?

A physical quantity that requires direction along with magnitude, for its complete specification is called a vector quantity.
835 Views