What Is Our Mathematical Model for Relative Motion?

Worksheet 1 Leader: Nevin Week 2 Day 3 Course: Phys 221 Supplemental Instruction Instructor: Whisnant Iowa State University Date: 01/28/2016

You need to design an airplane propeller for your upcoming summer internship. It has to turn at 2400 rpm. The forward airspeed of the plane is to be 75 m/s. The speed of the tips of the blades through the air cannot exceed 270 m/s. What is the maximum radius the propeller can have? What is the acceleration of the propeller tip?

A computer disc drive is turned on starting from rest and has constant angular acceleration. If it took .750 s for the drive to make its second complete revolution, how long did it take to complete its first revolution. What is the angular acceleration?

What is our mathematical model for relative motion?

1060 Hixson-Lied Student Success Center v 515-294-6624 v [email protected] v http://www.si.iastate.edu A flat car is travelling to the right at 13.0 m/s relative to the observer. Someone is riding a scooter on the flat car? What is the velocity of the motor scooter relative to the flat car if its velocity relative to the observer is 18 m/s to the right? 3 m/s to the left? 0?