To protect their young in the nest, peregrine falcons will fly into birds of prey (such as ravens) at high speed. In one such episode, a 620 g falcon flying at 20.0 m/s hit a 1.40 kg raven flying at 9.0 m/s. The falcon hit the raven at right angles to its original path and bounced back at 5.0 m/s. (These figures were estimated by the author as he watched this attack occur in northern New Mexico.)
A.By what angle did the falcon change the raven's direction of motion?
B.What was the raven's speed right after the collision?
conservation of momentum
The Attempt at a Solution
I put the falcon on the y axis and the raven on the x axis, I ten tried to find the a and y components of p then did theta= arctan9p2/p1) which gave me 45 degrees-wrong
I then tried to find the x and y components using
m_F_v_Fi + m_R_V_Ri = m_F_v_Ff + m_R_V_Rf
Solving for v_Rf for the x and y compents I got 9 and 8.16 respectively, the had theta= arctan(8.16/9)= 42 degrees again wrong.