Question

An object 0 mass 40kg is raised to a height of 5m above the ground what is its potential energy ? if the object is allowed to fall find its kinetic energy when it is half way down

Answer 1

mass=40 kg
height= 5m
g= 10ms^-2

P.E= mgh
=>40×5×10
=>2000 J

Now, if the object is halfway down,
Kinetic energy= P.E/2
=>2000/2= 1000J

assumption:- g=10 ms^-2

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Answer 2

$\sqrt{6}$