Final answer:
Power in physics is the rate at which work is done, mathematically represented as P = W/t, where P is power, W is work, and t is time. Power is measured in watts (W).
Step-by-step explanation:
Power is defined as the rate at which work is done. This means that power indicates how quickly work can be accomplished over time. When expressing power mathematically, we can write it as P = W/t, where P represents power, W denotes work, and t is the time during which the work is done. Therefore, of the options provided, power is most accurately described as (1) the rate at which work is accomplished. The SI unit for power is the watt (W), which equals one joule per second (1 W = 1 J/s).