Question

Chapter 11
1. Derive the equation for kinetic energy of an object and
define kinetic energy.
2. What is potential energy? Derive the equation of gravitational
potential energy of an object of mass m raising from
ground to height h.
3. Solve the following numericals :
(1) A porter lifts a luggage of 15 kg from the ground an
puts it on his head 1.5 m above the ground. Calculas
the work done by him on the luggage.
(2) An object of mass 15 kg is moving with a unifor
velocity of 4 ms. What is the kinetic energy possesse
by the object ?
4. ( 1 ) Explain commercial unit 1 kWh of energy/work.
(2) Give the examples of potential energy.
5. ( 1 ) What is work ? Explain it with suitable diagram.
( 2 ) Derive the SI unit of work and define it.
6. What is energy ? State the main types of energy and
one example for each.​

Answer 1

Answer:

kinetic energy is moves down to our body body is mass 2 moving with any object to this formula of kinetic energies half MV square and does potential energy is formula as and mass gravitation and force and third question solved pahla Mass 3 kg and height is 4 and height is 1.5 the potential energy is mass into gravitation into force means 15 into 9.8 into 1.5 answer is

Answer 2

Answer:

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