Question

A particle of mass 5 kg is moving with a uniform speed 3 root 2 in xy plane

Answer 1

Then its a 2 dimensional motion. Speed=3√2 And Mass=5kg

Answer 2

m = 5, V =3√2 and it is the two dimensional motion.

The direction of the particle motion and the vector is connecting the origin.

The particle at instant is similar vector product of the velocity.

The vector of radial from the origin is zero so the angular momentum is zero.