Q1. A particle with a charge of q = -5.50 nC is moving in a uniform magnetic field of vec{B}=( -1.28 T ) hat{z}. The magnetic force on the particle is measured to be vec{F}= ( -7.60×10-7 N )hat{y}. Calculate v_x, the x component of the velocity of the particle.
Q2. A child goes down a playground slide with an acceleration of 1.22. Find out the coefficient of kinetic friction between child and slide if the slide is inclined at an angle of 31.0 below the horizontal.