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A soccer player takes a free kick. Over a distance of 10 $\mathrm{m},$ the ball veers to the right by about $1 \mathrm{m}$. Estimate the spin the player's kick put on the ball if its speed is $30 \mathrm{m} / \mathrm{s}$. The ball has a mass of $420 \mathrm{gm}$ and has a circumference of $70 \mathrm{cm}$.
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21 kg/m³), \(v\) is the speed of the ball (30 m/s), \(d\) is the diameter of the ball (circumference / \(\pi\)), and \(\mu\) is the dynamic viscosity of air (1.5 x 10⁻⁵ Pa.s). Show more…
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Mechanics
Projectile motion
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