February 25, 2017

Homework Help: Physics

Posted by Hale on Tuesday, May 21, 2013 at 11:53am.

A 15 kg, 1m wide door which has frictionless hinges is closed but unlocked. A 400 g ball hits the exact middle of the door at a velocity of 35 m/s and bounces off elastically, thereby causing the door to slowly swing open. How long in seconds does it take for the door to fully open (rotate 90 degrees)?

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions