An object is moving to the right, and experiencing a net force that is directed to the right. the magnitude of the force is decreasing with time. the speed of the object is

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.