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Ankit
Ankit
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Is energy always a constant when the momentum is constentconstant?

How is it that when momentum is constentconstant, energy always stays a constentconstant.

For Example :- if $P = 0$ kinetic energy will also be 0.

But in a explosion (that momentum is conserved) where the object was still before the explosion the momentum still should be 0. By using $E_k=\frac{P^2}{2m}$ energy also return as 0 Jules.

If the $E_k=\frac{mV^2}{2}$ is used the kinetic energy comes as $E_k>0$ since kinetic energy is a scalar.

How is that?

Is energy always a constant when momentum is constent?

How is it that when momentum is constent energy always stays a constent.

For Example :- if $P = 0$ kinetic energy will also be 0.

But in a explosion (that momentum is conserved) where the object was still before the explosion the momentum still should be 0. By using $E_k=\frac{P^2}{2m}$ energy also return as 0 Jules.

If the $E_k=\frac{mV^2}{2}$ is used the kinetic energy comes as $E_k>0$ since kinetic energy is a scalar.

How is that?

Is energy always a constant when the momentum is constant?

How is it that when momentum is constant, energy always stays a constant.

For Example :- if $P = 0$ kinetic energy will also be 0.

But in a explosion (that momentum is conserved) where the object was still before the explosion the momentum still should be 0. By using $E_k=\frac{P^2}{2m}$ energy also return as 0 Jules.

If the $E_k=\frac{mV^2}{2}$ is used the kinetic energy comes as $E_k>0$ since kinetic energy is a scalar.

How is that?

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Ranidu Lakshan
Ranidu Lakshan
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Is energy always a constant when momentum is constent?

How is it that when momentum is constent energy always stays a constent.

For Example :- if $P = 0$ kinetic energy will also be 0.

But in a explosion (that momentum is conserved) where the object was still before the explosion the momentum still should be 0. By using $E_k=\frac{P^2}{2m}$ energy also return as 0 Jules.

If the $E_k=\frac{mV^2}{2}$ is used the kinetic energy comes as $E_k>0$ since kinetic energy is a scalar.

How is that?