Can any object have mechaincal energy even if it momentum is zero ? Exaplain.

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

Can an object have kinetic energy even if its momentum is zero? Explain.

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

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

Can a reaction have zero activation energy ?

Can a reaction have zero activation energy?

A wave transmits energy. Can it transmit momentum?

Can an object have (1) a constant velocity even through its speed is changing (2) a constant speed even through its velocity is changing ?

Can an object have (i) a constant velocity even through its speed is changing (ii) a constant speed even through its velocity is changing?