Question

A lunar vehicle is tested on earth at a speed of 12 km/h. When it travels at the same speed on the moon, is its momentum greater, less, or the same

Answer 1

Momentum is defined as product of mass and velocity

so it is

$P = mv$

so here since velocity will remain same as that is on the surface of earth

As well as the mass is always conserved

so here neither mass nor the velocity will change when it is moving on moon

So the momentum will remain unchanged and remain the same