Solve the previous problem , if particles moving in opposite direction.

In the previous problem

If in the previous problem, particle A moves with constant acceleration 4 m//s^(2) with initial speed 5 m//s and B moves with uniform speed 12 m//s , when and where the particle meet?

In the previous problem, if the particle occupies a position x=7m at t=1s , then obtain an expression for the instantaneous displacement of the particle.

If the magnetic force on a moving charged particle in a magnetic field becoms ______ the direction of motion of the particle, or its opposite direction, indicates the direction of magnetic field. [Fill in the blank

In the previous problem, How far from the point directly opposite to the starting point does the man reach the opposite bank

In previous problem, the stopping potential is

Suppose all the surface in the previous problem are rough, the direction of friction on B due to A