The work the truck engine did during the 2 hour period is 8.1 × 10⁹ J
From the question, we are to determine how much work the truck engine did
Work is given by the formula
Work = Force × Distance
First, we will determine the distance traveled by truck
From the formula,
Distance = Speed × Time
From the given information
Speed = 45 m/s
Time = 2 hours = 2×60×60 = 7200 secs
Then,
Distance = 45 × 7200
Distance = 324000 m
Now, for the work done
Work = Force × Distance
From the given information,
Force = 25 kN = 25000 N
Therefore,
Work = 25000 × 324000
Work = 8.1 × 10⁹ J
Hence, the work the truck engine did during the 2 hour period is 8.1 × 10⁹ J
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