Which has more momentum, using a 5 Kg with hammer and a large swing of velocity A, or using a 5 kg hammer with a small swing of velocity A? A. Can not tell because A is not specified.
B. The small swing.
C. The large swing
D. The momentum is the same in both cases.

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.