- #1

Just_enough

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## Homework Statement

sorry, me again.

The following figures show various forces acting on gliders of various masses at rest on a frictionless track. In each case, the force is applied for 30cm. The choice listing the examples in decreasing order for the increase in kinetic energy is {-4J < -2J < 1J}

answer:(a) C > A=B > D (b) B=C > D > A (c) C > A > B > D (d) B > C > D > A (e) B > C > A > D

## Homework Equations

W=FD

F= MA

## The Attempt at a Solution

I don't clearly understand the questions here, is it asking for sorting it from most work to least? (cant ask teacher since he nevers check his email). if so wouldn't it be D>c>b>a since the mass of it all is combine on d, so it requires more force? I don't understand how in the answer, a block can be = to another block, of the other block (combined) mass is more?