A bullet, of mass 20g, traveling at 350 m/s, strikes a steel plate at an angle of 30degrees with the plane of the plate. it ricochets off at the same angle, at a speed of of 320 m/s. What is the magnitude of the impulse that the wall gives to the bullet?
a. 300 Ns
b. 0.3 Ns
c. 0.52 Ns
d. 6.7 Ns.
Impulse is given as the change in momentum for the bullet. Momentum is the mass time the vector velocity of the bullet.
The initial vector velocity can be resolved into a Cartesian coordinate system (i,j) with the plate on the i axis the initial velocity vector is ...
The solution works through the problem of the magnitude of impulse that a wall gives a bullet which strikes against it and ricochets off, as described in the question, with brief worded explanations interspersing the necessary calculations in a clear and concise manner.