Asmall toy cart equipped with a spring bumper rolls toward a wall with a speed of v . the cart rebounds from the wall, with the same speed v . the sketch below shows the initial velocity vector v⃗i , final velocity vector v⃗f , and the initial momentum vector p⃗i . using the initial momentum vector as a basis, draw the change in momentum vector δp⃗ for the cart.

the orientation and length of your vector will be graded. the location will not be graded.