- #1

- 50

- 2

## Homework Statement

The same constant force is used to accelerate two carts of the same mass, initially at rest, on horizontal frictionless tracks. The force is applied to cart A for twice as long a time as it is applied to cart B. The work the force does on A is WA; that on B is WB. Which statement is correct?

a.WA = WB.

b.WA = https://www.physicsforums.com/x-apple-ql-id://75E1D3CA-C6B4-441B-A5A4-36B84CE66FF0/x-apple-ql-magic/C3C64FB0-9E65-46A8-9150-27D9512B39A1.pdf [Broken]WB.

c.WA = 2 WB.

d.WA = 4 WB.

e.WB = 2WA.

## Homework Equations

W = F * d * cos(theta)

x= vot + 0.5 *a * t^2

## The Attempt at a Solution

The answer is D, but I don't know where to start to get the answer d.

I thought since it has same mass and acceleration, twice of time will just make it twice of work.

Can anyone help me explaining this with equation??

Last edited by a moderator: