1.

An object of mass 40 kg is raised to a height of 5 m above theground. What is its potential energy? If the object is allowed tofall, find its kinetic energy when it is half-way down.​

Answer»

Answer:As we know that ,

Potential energy =mgh

Take g= 10 m/s^2

Now ,

P.E = 40 ×10×5 =2000J

And K.E at half way = mgh

Where H is half means 2.5

K.E = 40 ×10×2.5

= 1000 J

Explanation:

Here ,J is joule that is unit of WORK done.And at the end K.E is equal to P.E so I took K.E equal to mgh

If answer is WRONG or I went SOMEWHERE wrong just LET me know



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