PHYSICS – Wow, we finally made it to the end of chapter 3! Did you catch on to relative motion?
You know, we’ve done most of this already. The only new part is the motion of objects in the same direction and opposite directions, relative to each other. Don’t forget, you’ll use what you learned about vector addition to work those “boat goes across a river” and “plane experiences a head wind” types of problems.
In case you didn’t get them in class today, here are the answers to tonight’s problems. Help session tomorrow morning, 7:15ish!
36) 4.11 m
37) 80 m; 210 m
43a) 10.1 m/s at 8.53° east of north; b) 48.8 m
44a) 14.1° north of west; b) 199 km/h
45) 7.5 min
46a) 23.2° upstream from straight across; b) 8.72 m/s across the river
PHYSICS 10-6-14 Relative Motion from Tammy Skinner on Vimeo.