The magnetic force on a charged particle is always perpendicular to its velocity. Can the magnetic force change the velocity of the particle?Speed of the particle?

The velocity of a charged particle moving in a magnetic field perpendicular to it is

Statement 1: A charged particle undergoes non-rectilinear motion in a constant magnetic field. The only force acting on the particle is the magnetic force. Then kinetic energy of this particle remains constant but momentum of the particle does not remains constant. Statement 2: A force that always acts on the particle in direction perpendicular to its velocity does no work on the particle. But whenever a force acts on the particle, momentum of the particle does not remains constant.

A charged particle is moved along a magnetic field line. The magnetic force on the particle is

A charged particle is moved along a magnetic field line. The magnetic force on the particle is

A charged particle is moved along a magnetic field line. The magnetic force on the particle is

A charged particle is moved along a magnetic field line. The magnetic force on the particle is