The brakes of a truck cause it to slow down by applying a retarding force of 7760 N to the truck over a distance of 870 m. What is the work done by this force on the truck?
To find the work done by a force, you can use the formula:
Work = Force x Distance
In this case, the force applied by the brakes is 7760 N and the distance over which the force is applied is 870 m. Plugging these values into the formula, we get:
Work = 7760 N x 870 m
Now, we can calculate the work done by multiplying the force by the distance:
Work = 6,751,200 N·m
The unit for work is N·m, which is also known as a joule (J). Therefore, the work done by the brakes on the truck is 6,751,200 joules.