Question

1) An object increases its energy when raised through a height
Energy is neither created nor destroyed then from where dowe
get energy.

2) When we push the wall, the wall does not move and no work is
done.

3) A body possess potential energy of 460 J whose mass is 20 kg and
is raised to a certain height. What is the height when g = 10 m/s2.

4) What work is said to be done to increase the velocity of a car from

5)15 km/h to 30 km/h, if the mass of the car is 1000 kg?
Explain the different forms of energy with examples.

Answer 1

Explanation:

1) when we push it up we give some force, here force gets coverted into energy

2) that is because of the equivalent force since wall has more weight , gravity is strong

sometimes we move backwards

3) sry I don't know

4) acceleration

5) sry same as 3rd

Answer 2

no.


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