can someone please demonstrate how a question such as this is solved. A proton travelling with a velocity 6.0 × 105 m/s i makes a glancing collision with a second proton at rest. One of the protons is observed after the collision to be moving with a velocity V1 = 4.6 x 105 m/s at a 40 degree angle to the original incoming proton’s direction. i. Determine the velocity of the other proton after the collision in unit vector notation ii. Calculate the angle θ.