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Classical Mechanics Level 2

A sound source with frequency \(100\) Hz is approaching Calvin with a speed of \(20\) m/s , while Calvin riding a bicycle toward the sound source with a speed of \(60\) m/s, as above. If the speed of the sound wave is \(340\) m/s, what is the frequency of the sound that Calvin hears?

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100 Day Summer Challenge

Coming Sound

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, conceptual quizzes.

Our wiki is made for math and science

Master advanced concepts through explanations, examples, and problems from the community.

Used and loved by 4 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

Master advanced concepts through explanations,
examples, and problems from the community.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Master advanced concepts through explanations,
examples, and problems from the community.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.