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Chapter 1: Q102P (page 1)

Question: The sport with the fastest moving ball is jai alai, where measured speeds have reached 303 km/hr. 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?

Short Answer

Expert verified

Answer

The distance ball moved during the blackout is 8.42m.

Step by step solution

01

Given data

The measured speed, 303km/h

Time interval, 鈻�t=100m/s

02

The speed of an object is defined as the rate of change of distance with time. It is a scalar quantity.  

The expression for the speed is given as follows:

speed=DistanceTimeInterval 鈥� (i)

03

Determination of the distance moved during the blackout.

First, convert the speed of the ball fromkm/htom/s . The speed of the ball can be written as,

Speed=303km/h=303脳518m/s=84.167m/s

From equation (i), the distance covered during the blackout is,

顿颈蝉迟补苍肠别=厂辫别别诲脳罢颈尘别颈苍迟别谤惫补濒=84.167尘/蝉脳100脳10-3s鈮�8.42m

Thus, the distance ball moved during the blackout is 8.42m..

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