DAY 56

Goals: SWBAT...

1. Solve/answer a variety of momentum and impulse problems/questions in preparation for our exam tomorrow.

Warm-Up (5min):

1. Suppose that you have joined NASA and are enjoying your first space walk. You are outside the space shuttle when your fellow astronaut of approximately equal mass is moving towards you at 2 m/s (with respect to the shuttle). If she collides with you and holds onto you, then how fast (with respect to the shuttle do you both move after the collision?

2. A steam locomotive has five times the mass of a boxcar. The locomotive coasts backwards along the track at 4 m/s and couples together with the boxcar (initially at rest). How fast do the two cars coast after they have coupled together?

CLASSWORK

1. #056A: Review Time! :)

• Tomorrow's exam will cover momentum & impulse. Today we'll review some concepts which will be on that exam.
• Complete the following to review/prep: 1-4, 5(c & g only), 6, 7, 11, 13-16, 18, 23, 24, 28, 34, 46, 57, 60, 64, On the exam, there will be an extra credit problem. It is similar to #65. Review #65 to prep for the extra credit.
• Practice problems are here: LINK

At Home Learning (HW)

1. Exam tomorrow. Review solutions to practice problems from 56A.

You may bring a calculator and your equation sheet (table of friends)