First collision

Classical Mechanics Level 2

There are two objects \(A\) (\( 15 \text{ m} \) above ground) and \(B\) (\( 10 \text{ m} \) above ground) on a straight line perpendicular to the ground. \(A\) is thrown straight downward with a speed of \( 10 \text{ m/s} \) and, at the same time, \(B\) starts to fall freely. Find the time that passes until their first collision.

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First collision

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, interactive explorations.

Used and loved by over 6 million people

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

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

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