Question

The sport with the fastest moving ball is jai alai, where measured speeds can be 296 km/h. If a professional jai alai player faces a ball at that speed and involuntarily blinks, he blacks out the scene for 100 ms. How far does the ball move during the blackout?

Answer 1

Question #51382, Physics, Mechanics | Kinematics | Dynamics

The sport with the fastest moving ball is jai alai, where measured speeds can be 296 km/h. If a professional jai alai player faces a ball at that speed and involuntarily blinks, he blacks out the scene for 100 ms. How far does the ball move during the blackout?

Answer.

$$d = V t$$

In our case: $V = 296 \frac{km}{h} = 296 * \frac{1000}{60*60} \frac{m}{s} \approx 82.22 \frac{m}{s}$;

$$t = 100 \, ms = \frac{100}{1000} \, s = 0.1 \, s.$$

So, $d = 82.22 * 0.1 = 8.222 \, m \approx 822 \, cm$.

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