- #1

vu10758

- 96

- 0

The correct answer is -24t^2 k (kgm^2/s).

I know that L = r*p and p is mv

so I differentiate r to get v

v = -4 i + 6t j

do I just multiply 2 and the cross proudct of r and v? I don't know what to do because of the t in the equation for vector r.