a 5.20 g bullet moving at 672 m.s strikes a 700 g wooden block at rest on a frictionless surface. the bullet emerges, traveling in the same direction with its speed reduced to 428 m/s. (a) what is the resulting speed of the block? (b) what is the speed of the bullet-block center of mass?



Answer :

The centroid is a unique point at the center of the mass distribution in space that has the property that the weighted position vectors with respect to this point sum to zero.

Similar to statistics, the centroid is the average position of the mass distribution in space. In physics, we say that the centroid is the point at the center of the mass distribution in space (also called the equilibrium point) where the sum of the weighted relative positions of the distributed masses is zero. Simply put, the center of gravity is the relative position of an object.

Choose +X along the first direction of travel and save the pulse as follows: 672m/s)

= (5.2 g )(428m/s) + (700g)ν

2/4 4.4 4 4.4 2 .4 4.4 2

= 1.81 m/s. The constant velocity is a result of conservation of momentum. Choose to evaluate it before collision. s)

=4.96m/s

Learn more about gravity here-

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