Question
The brakes of a truck cause it to slow down by applying a retarding force of 3.0 × 103N to the truck over a distance of 850 m.
What is the work done by this force on the truck? Is the work positive or negative?
What is the work done by this force on the truck? Is the work positive or negative?
Answers
GPT 3.5
To calculate the work done by a force, we can use the equation:
Work = Force x Distance
Given that the retarding force applied by the brakes is 3.0 × 10^3 N and the distance over which the force is applied is 850 m, we can substitute these values into the equation:
Work = (3.0 × 10^3 N) x (850 m)
Work = 2.55 × 10^6 N∙m = 2.55 × 10^6 J
Therefore, the work done by the force is 2.55 × 10^6 J. Since the force is retarding the motion of the truck, the work done by the force is negative.
Work = Force x Distance
Given that the retarding force applied by the brakes is 3.0 × 10^3 N and the distance over which the force is applied is 850 m, we can substitute these values into the equation:
Work = (3.0 × 10^3 N) x (850 m)
Work = 2.55 × 10^6 N∙m = 2.55 × 10^6 J
Therefore, the work done by the force is 2.55 × 10^6 J. Since the force is retarding the motion of the truck, the work done by the force is negative.