A 4kg box accelerated from rest by a force across the floor at a rate of 2m/s^2 for 7 seconds. What is the net work done on the

Question

4 years ago

14

box?

2 answers:

AlladinOne [14] · Answer 1 · 2022-02-14T03:29:13+03:00

7 0

Answer and work is shown in the image attached.

please mark me brainliest :)

Illusion [34] · Answer 2 · 2022-02-14T04:47:44+03:00

The solution in the first answer is excellent.

Here's another way to do it:

Force = (mass) x (acceleration)

Force = (4 kg) x (2 m/s²)

Force = 8 Newtons

Distance = (1/2) (a) (T²)

D = (1/2) (2 m/s² ) (7 sec)²

D = 49 meters

Work = (force) x (distance)

Work = (8 N) x (49 m)

<em>Work = 392 Joules</em> yay!