Learn how to find torque for angled forces with Khan Academy's physics tutorial video.

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Optimal angle for a projectile part 3 - Horizontal distance as a function of angle (and speed)

2021年3月15日 · Khan Academy offers over 100k free math practice problems and worksheets.

Learn how to use the quadratic formula to solve quadratic equations with step-by-step instructions and examples on Khan Academy.

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2021年3月25日 · Want to get even more out of Khan Academy? Then be sure to check out our teacher tools.They’ll help you assign the perfect math worksheet for each student and track your students’ progress across the year. Plus, they’re also 100% free — with no subscriptions and no ads. This is a button