A2.80 kg mass is dropped from a height of 4.50 m. find its kinetic energy(ke) when it is 1.50 m above the ground?

82.32 J

Explanation:

Given:

Mass,

Initial height,

Final height,

As the mass is dropped, its initial velocity is 0 m/s.

So, initial kinetic energy is also 0 J.

Now, according to conservation of energy,

Increase in Kinetic energy is equal to the decrease in potential energy.

Here, Decrease in potential energy is given as,

Δ

Now, increase in kinetic energy is equal to the kinetic energy at height as the initial kinetic is 0.

∴ Kinetic energy at height 1.50 m above ground is given as the decrease in potential energy.

So, Kinetic energy = Decrease in potential energy =

Kinetic energy at height 1.50 m above ground is .

it breaks and dirupture other materials and other sencews from the bottom

e/c, where e is its total energy