Question

1. Calculate the work done when force of
70 N moves the object by 16 metres.
2. Distinguish between renewable and non-
EH
E. Answer the following questions :
renewable sources of energy.
70x16 = 1120 isul
3. What is work? Give two conditions for
work to be done.
4. Differentiate between kinetic and potential
energy
5. State principle of conservations of
energy​

Answer 1

Answer:

1. Work (W) = Force (f) × displacement (s)

.•. W = F × S

= 70 × 16

.•. Workdone = 1120 Nm^2

3. Work :

When force is applied to a body causing it's displacement then work done is to be said.

Conditions for workdone:

1. Force applied

2. Displacement takes place

4. Kinetic energy: When the energy in a body is due to it's motion this energy is called kinetic energy.

Potential energy: When a rest body has energy due to it's state of rest this energy is called potential energy

5. Principle of conservation of energy:

" The energy neither be created nor be destroyed it can only transfer from one form of energy to another form".

(energy in universe is unidirectional.)

Explanation:

I couldn't got your 2nd question due to which I am unable to give you answer

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