Question

all formulas of work and energy chapter in physics class 9?

Answer 1

W = F × s ( force × displacement or distance (d)

Energy is equal to work means

E = Fs

E = Power× time

KE = 1/2mv^2

PE = mgh

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Answer 2

All the formulas for work and energy chapter in physics are:

• Work and energy are closely related.
• Work can also be defined as the transfer of power.

• In Physics, in two respects, work performed is defined as the transfer of energy from the first element to the second element.

• Also, energy is defined as the ability to perform a function.

Formula:

• Work can be calculated by multiplying power and distance as follows.
• W = F × d.

• In physics, we can define energy as the ability to do work.

Formula:

• With the potential formula.
• P.E. = mgh.

Unit:

• SI unit of power joules (J), named in honour of James Prescott Joule.