Question

Una bala de 10 g se dispara contra un bloque de madera de 102 g inicialmente en reposo sobre una superficie horizontal. Después del impacto el bloque se desliza 8 m antes de detenerse. Si el coeficiente de fricción entre el bloque y la superficie es 0,5, ¿Cuál es la velocidad de la bala inmediatamente antes del impacto?

Answer 1

The velocity of the bullet immediately before impact is 0 m/s.

Step-by-step explanation:

To find the velocity of the bullet immediately before impact, we can use the principle of conservation of momentum. The initial momentum of the bullet is given by the product of its mass (10 g or 0.01 kg) and its initial velocity (which we need to find). The final momentum is given by the product of the total mass of the bullet and block (112 g or 0.112 kg) and the final velocity of the block after impact (which is zero since it comes to a stop).

Using the equation for conservation of momentum, we can set the initial momentum equal to the final momentum:

0.01 kg * V = 0.112 kg * 0

Simplifying the equation gives us:

V = 0 m/s

Therefore, the velocity of the bullet immediately before impact is 0 m/s.