Question

a body of mass 1 kg is allowed to fall freely from height of 10 m . Afyer one meter find it's Kinetic energy and potential energy​

Answer 1

Answer:

GIVEN :-

Mass = 1 kg

Height = 10 m

Height from which to find value = 9 m

Gravitational acceleration = 10 m/s²

To Find :-

Kinetic and potential energy

Solution :-

❶ $\underline\mathrm\red{Kinetic \: energy}$

As we know that kinetic energy = ½mv²

$\sf \: KE =\dfrac{1}{2} \times 1 \times 10KE$

$\sf \:KE = 1 \times 5KE=1×5$

Therefore,

Kinetic energy = 5 Joule.

❷ $\underline\mathrm\pink{Potential \: Energy}$

As we know that Potential energy = mgh

$\sf PE = \: 1 \times 10 \times 9PE$

Therefore,

Potential energy = 90 Joule

Answer 2

Answer:

GIVEN :-

Mass = 1 kg

Height = 10 m

Height from which to find value = 9 m

Gravitational acceleration = 10 m/s²

To Find :-

Kinetic and potential energy

Solution :-

❶ Kinetic Energy

As we know that kinetic energy = ½mv²

$\sf \: KE =\dfrac{1}{2} \times 1 \times 10K$

$\sf \:KE = 1 \times 5KE=1×5KE$

Therefore,

Kinetic energy = 5 Joule.

❷ Potential Energy

As we know that Potential energy = mgh

$\sf PE = \: 1 \times 10 \times 9PE$

Therefore,

Potential energy = 90 Joule