3.
Calculate the power of a truck that does 4,500,000 J of work in 15 seconds.
To calculate power, use the formula:
Power = Work/Time
Given that the truck does 4,500,000 J of work in 15 seconds:
Power = 4,500,000 J / 15 s
Power = 300,000 watts
Therefore, the power of the truck is 300,000 watts.