Question

an object of mass 40 kg is raised to a height of 5m above the he ground what is its potential energy if the object
when it is half why down​

Answer 1

Answer:

g = 10 m/s²

P.E = mgh

     = 40kg × 10 m/s² × 5m

     = 2000 J

its potential energy if the object  when it is half way down​

P.E = K.E [∵if there is no external force acting on it]

K.E = 1/2 mv²

     

P.E = 2000J / 2

     = 1000 J

Answer 2

Explanation:

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