Aproton, moving with a velocity of viî, collides elastically with another proton that is initially at rest. assuming that after the collision the speed of the initially moving proton is 1.10 times the speed of the proton initially at rest, find the following.

a) the speed of each proton after the collision in terms of viî
initially moving proton by viî
initially at rest proton by viî

b) the direction of the velocity vectors after the collision
initially moving proton ° relative to the +x direction
initially at rest proton ° relative to the +x direction