The polar coordinates of two vectors are; A = (10m, 240°), and B = (5m, 180'). a) Express each vector in unit vector notation.
b) Find, Ã = 2X + B in unit vector notation.
c) Find the magnitude of R.
d) Find the anticlockwise angle that vector R makes with +x axis.​

An electron moves with a constant horizontal velocity of 3.0 × 106 m/s and no initial vertical velocity as it enters a deflector inside a tv tube. the electron strikes the screen after traveling 26 cm horizontally and 19 cm vertically upward with no horizontal acceleration. what is the constant vertical acceleration provided by the deflector? (the effects of gravity can be ignored.)