- #1

gigglin_horse

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## Homework Statement

"Is more work required to bring a fully loaded truck up to a given speed than the same truck lightly loaded? Defend your answer"

## Homework Equations

I put:

Work = Force x distance

Distance = speed x time

As speed in a common factor, we take it out

Work = Force x time....Is this correct so far?

So the work is the same.

Small force, long time, or short time, big force.

But doesn't work = change in KE?

so W = 1/2 m x v^2

...So the greater one does require more work?

I don't know...

Help me please!