Under which conditions is momentum conserved? (Click all that apply) Momentum is

Question

Under which conditions is momentum conserved? (Click all that apply) Momentum is always conserved Momentum is conserved when non-conservative forces do no work Momentum is conserved when no forces act on a body. Momentum is conserved when the net force acting on a body is zero. Part 2) A bullet with a mass of mbullet 17.3 g is shot out of a gun. It travels with a speed v 294 m/s towards a block with mass mblock 1.95 kg and becomes embedded in the block. During the collision, is momentum conserved? . Not answered O Yes No Part 3) ls energy conserved? O Not answered O Yes No Your last answer was interpreted as follows:1 Part 4) What is the momentum of the bullet as it travels towards the block? kgm/s towards the block Part 5) What is the speed of the block once the bullet is at rest with respect to the block? m/s

Explanation / Answer

Momentum is always conserved

During a collision momentum is conserved

momenutm of the bullet before embedding = mv = 0.0173*294 = 5.0862 kg m /s

speed of the block = mv / (M+m) = 5.0862 / (1.95 + 0.0173) = 2.58 m/s

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