Spiderman (till 76kg) ha woken up from hi knockout from Dr. Octopu. While on the treet level he ee the neural inhibitor chip that will retore Dr. Octopu' mind. He immediately grab the chip and machine to implant it (5kg). With what initial velocity will Spiderman need to jump with to get all the way back up to Dr. Octopu at the top of the 13m building?