Atruck accelerating at 0.0083 meters/second2 covers a distance of 5.8 × 104 meters. if the truck's mass is 7,000 kilograms, what is the work done to reach this distance?

The correct answer to the question is

CALCULATION:

The acceleration of the truck is given as a =

The mass of truck is given as m = 7000 kg.

The distance travelled by the truck S = .

The force applied on the truck is calculated as -

                            Force F = mass × acceleration

                                      =

                                      = 58.1 N.

We are asked to calculate the work done .

The work done by a body is calculated as -

                                              W =

                                                   =

Here, is the angle between force and displacement.

If , then W = FS

Hence, the work done by the truck W = FS

                                                               =

                                                               =

Here, J ( joule ) is the unit of work.