Final answer:
The work done to lift a barbell weighing 100 newtons a distance of 1.5 meters is calculated as 150 joules, which is the product of the force and the distance.
Step-by-step explanation:
The work done to lift a barbell is calculated using the formula W = F × d, where W is the work done, F is the force, and d is the distance over which the force is applied. In the case of lifting a barbell weighing 100 newtons a distance of 1.5 meters, the work done can be found by multiplying the weight of the barbell (force) by the distance lifted:
W = 100 N × 1.5 m = 150 joules.
Therefore, the correct answer is d. 150 joules.