Suppose a scrawny 20. kg Wyle was shot straight up with an initial velocity of +50 m/s.   a.    Assuming that all his initial Ek was transformed into Eg, what is the maximum height he could reach?

b.    Suppose that 20% of his initial Ek were lost due to friction with the air (air resistance). 
What is the maximum height he could reach?

Consider each of the electric- and magnetic-field orientations given next. in each case, what is the direction of propagation of the wave? a)\vec ein the +xdirection,\vec bin the +ydirection. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction b)\vec ein the -y direction,\vec bin the +x choose+ x direction- x direction+ y direction- y direction+ z direction- z direction c)\vec ein the +z direction,\vec bin the -x direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction d)\vec ein the +y direction,\vec bin the -z direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction