A 2-kg piece of clay moving at 4 m/s strikes and sticks to a second 4-kg piece of clay moving at 1 m/s in the opposite direction. What is the speed of the combined piece of clay?

vf =2 m/s

Explanation:

Since the pieces of clay strike and stick together then they must move with the same velocity after the collision between them.

The conservation of momentum says that the initial and final momentum must be equal

where and

Therefore, the speed of the combined piece of clay is 2 m/s

b

step-by-step explanation: a third of 24 is 8, 8 times 3 is 24 so 8 - 2 would be 6

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