All of the following were unsuccessful attempts to stir the economy during the global depression of the 1920s and 1930s except reverting to a barter system until the Depression ended. The correct option among all the options that are given in the question is the third option or option "c". I hope it helps.

8 0

3 years ago

Determine the changekf−ki in the kinetic energy of the block as it moves from xi = -6.00cm to xf = 4.00cm .

Aleksandr-060686 [28]

You can determine the change of kinetic energy by calculating the work done on the system. That would be force multiplied with distance. However, you only have the distance for the given. Anyway, I've found a similar problem. So, I hope I could still help you in understanding it, even just the concept.

So, in the similar problem that I found, two opposite forces are acting on a block along the frictionless surface. F1 = +80 N and F2 = -30 N.

We get the net force. Then, we find the work which is just kinetic energy in form.

W = KE = F*d
KE = (80 - 30)*(4 - -6)
KE = 500 J

So, if you have the actual values and direction of forces, the same concept applies. I hope I was able to help.

5 0

3 years ago