Uploaded September 2020 | Updated September 2026, 3 weeks ago

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Lesson 2 of Dianna's Intro Physics Class on Physics Girl. Topic: Freefall. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you!

Exercises in this video:

Problem 1: If we drop a wrecking ball from a height of 35 meters, how long will it take to fall?

Problem 2: The ball bounces on a trampoline. It takes the ball 1.7 seconds to reach its maximum height. What is the height? How fast was the ball going when it left the trampoline?

Problem 3: You dive off a diving board, 5 meters high, into a pool. You end up 2.5 meters deep in the pool. Assuming constant acceleration, what was your acceleration while the pool water was you slowing down?


Dianna Cowern - Executive Producer/Host/Writer
Jeff Brock - Lead Writer/Course Designer
Laura Chernikoff - Producer
Victoria Page - Video Editor
Sophia Chen - Researcher/Writer
Levi Butner - Videographer
Hope Butner - Production Assistant
Darren Dyk - Slow Motion Cinematography
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