Chapter 07, Problem 29 Consult Multiple-Concept Example 8 for background pertine

Question

Chapter 07, Problem 29 Consult Multiple-Concept Example 8 for background pertinent to this problem. A 2.86-g bullet, traveling at a speed of 466 m/s, strikes the wooden block of a ballistic pendulum, such as that in Figure 7.14. The block has a mass of 293 g. (a) Find the speed of the bullet/block combination immediately after the collision. (b) How high does the combination rise above its initial position? Chapter 07, Problem 29 Consult Multiple-Concept Example 8 for background pertinent to this problem. A 2.86-g bullet, traveling at a speed of 466 m/s, strikes the wooden block of a ballistic pendulum, such as that in Figure 7.14. The block has a mass of 293 g. (a) Find the speed of the bullet/block combination immediately after the collision. (b) How high does the combination rise above its initial position? Chapter 07, Problem 29 Consult Multiple-Concept Example 8 for background pertinent to this problem. A 2.86-g bullet, traveling at a speed of 466 m/s, strikes the wooden block of a ballistic pendulum, such as that in Figure 7.14. The block has a mass of 293 g. (a) Find the speed of the bullet/block combination immediately after the collision. (b) How high does the combination rise above its initial position?

Explanation / Answer

m = 2.86 g

vb = 466 m/s

M = 293 g

from conservation of momentum

mvb = (m+M)V

V = 2.86*466/295.86

V = 4.5 m/s

b) kinetic energy = potential energy

h = V^2/2g = 1.04 m

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