| = 2m/s y A Vl = 4m/s A А B |Ve = 0 B) Bs

A bullet of mass 0.018 kg traveling horizontally at a high speed of 200 m/s embeds itself in a block of mass 4 kg that is sitting at rest on a nearly frictionless surface. (a) What is the speed of the block after the bullet embeds itself in the block? Vf = 7 X m/s (b) Calculate the total translational kinetic energy before and after the collision. Ktrans,/ = 180 X J Ktrans,f = 260 X J (c) Compare the two results and explain why there is a difference. O The Energy Principle isn't valid for an inelastic collision. The internal energy of the block-bullet system has increased. O Some of the momentum is lost in an inelastic collision.

A 0.430-kg blue bead slides on a frictionless, curved wire, starting from rest at point O in the figure below, where h = 1.50 m. At point O, the blue bead collides elastically with a 0.640-kg green bead at rest. Find the maximum height the green bead rises as it moves up the wire.

The uniform 19-m pole has a mass of 150 kg and is supported by its smooth ends against the vertical walls and by the tension Tin the vertical cable. Compute the magnitudes of the reactions at A and B. B T 12 m 7 m A 14 m Answers: FA = N FB

During an elastic collision, a proton with a velocity of 5000 m/s [forward] undergoes a head on collision with an alpha particle (composed of two protons and two neutrons) with a velocity of 2000 m/s [backward]. Determine the final velocities of the subatomic particles. Assume forward is positive.