Can any object have momentum even if its mechanical energy is zero? Explain.

AcademicPhysicsNCERTClass 9

No, if the mechanical energy of an object is zero, then momentum is also zero. This can be explained as:

Then, Mechanical energy$=$Kinetic energy$+$Potential energy$=0$

So, kinetic energy$=$potential energy$=0$

Or $\frac{1}{2}mv^2=0$

Or $v=0$

So, momentum $mv=0$

Updated on 10-Oct-2022 13:28:52