# Trig Review for Physics – Common Math Tools – Physics 101, AP Physics 1 Review with Physics Girl

From Physics Girl.

Creator/Host/Writer: Dianna Cowern
Producer: Laura Chernikoff
Researcher/Writer: Sophia Chen
Editor: Levi Butner

Exercises in this video:

Problem 1: 1. You are running north-east at a speed of 4 m/s. What component of your velocity is north? How about east?

Problem 2: You are kite-surfing and your kite is pulling you upwards at an angle of 60º with respect to the ocean, with a force of 1200 Newtons. What component of that force is up? How much of it is sideways, parallel to the water?

Problem 3: Extra Credit: You are swimming across a river, swimming perpendicularly to the current. You can swim 1 m/s. The river has a current of 2 m/s. With respect to the shore, what is the angle of your resulting velocity vector? How fast are you swimming over the riverbed?

Dianna Cowern – Executive Producer/Host/Writer
Jeff Brock – Lead Writer/Course Designer
Laura Chernikoff – Producer
Levi Butner – Videographer/ Video Editor
Sophia Chen – Researcher/Writer
Hope Butner – Production Assistant
Andy Brown – Curriculum Consultant
Set Design – Lauren Ivy
Vanessa Hill – Consulting Producer
Aleeza McCant – Illustrator
Alicia Cowern – Transcription
Consultant – Kyle Kitzmiller
Lucy Brock, Samantha Ward – Curriculum Consultants