Two people who weigh the same climb a flight of stairs. The first person climbs the stairs in 30 s, while the second person climbs them in 40s. Which person does more work? Which uses more power?

Both do the same amount of work. Power is work/unit of time; therefore, the person who climbs faster exerts more power. Check my thinking.

To determine which person does more work while climbing the stairs, we need to understand the concept of work. Work is defined as the force applied on an object multiplied by the distance over which the force is applied. In this case, the force applied is the weight of the person, and the distance is the height of the stairs.

Since both people weigh the same, their weights are equal. Therefore, the force applied by each person is the same. However, the distance covered by the stairs is also the same for both people. Therefore, the work done by both people is equal.

Now let's consider the concept of power. Power is the rate at which work is done or energy is transferred. Mathematically, power is calculated as work divided by time. Therefore, to find out which person uses more power, we need to compare their times.

The first person climbs the stairs in 30 seconds, and the second person climbs them in 40 seconds. Since the work done by both people is the same, the person who finishes the task in less time would use more power. Therefore, the first person, who takes 30 seconds, uses more power while climbing the stairs compared to the second person who takes 40 seconds.

Two people who weigh the same climb a flight of stairs. The first person climbs the stairs in 30 s, while the second person climbs them in 40s. Which person does more work? Which uses more power?