$1400 \ kgm/s^2$
Work Step by Step
We use the equation for momentum, using the amount of water that hits the window each second as the mass: $p = mv = 45 \times 32 = 1400 \ kgm/s^2$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.