Question

write a short note on teachers day​

Answer 1

Answer:

Expression for kinetic energy :

Suppose a Force ‘F’ acting on a body of mass ‘m’ in state of rest changes its velocity to ‘v’ and body covers ‘s’ distance in the direction of force.

Then, the work done by the force is given by

W = F . S

= ma . S …………(1) [ F = ma ]

Now, using equation of motion, we have

v2 = u2 + 2aS

or, v2 = 0 + 2aS

as = v2/2

So, by equation (1) , we get

W = m .v2/2

so , by definition of kinetic energy of the body,

K.E. = W = 1/2 mv2

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Explanation:

Answer 2

Answer:

As we all know that our teachers play a great and most important role in our lives. They helps us to improve our knowledge, skill level, confidence as well as they shape us in the right shape to get success. So, we too have some responsibilities towards our loyal teachers. We all as an obedient student need to do a heartily welcome and say them wishful thanks for their selfless service of teachings all through the life as well as shaping the life of various students. Teacher’s day (which is celebrated once a year on 5th of September) is the great chance to us to spend a day for them and say thanks