Question

1. how much power is generated by a weightlifter that lifts a 115 kg weight a distance of 1 m in 1 second?

564.08 w
115 w
250 w
1,128.15 w

Explanation:

Step1: Calculate gravitational force

$F = m \times g = 115\ \text{kg} \times 9.81\ \text{m/s}^2 = 1128.15\ \text{N}$

Step2: Calculate work done

$W = F \times d = 1128.15\ \text{N} \times 1\ \text{m} = 1128.15\ \text{J}$

Step3: Calculate power generated

$P = \frac{W}{t} = \frac{1128.15\ \text{J}}{1\ \text{s}} = 1128.15\ \text{W}$

Answer:

1,128.15 W