Question

The sport with the fastest moving ball is jai alai, where measured speeds can be 286 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

d= 794.4 cmExplanation:

Given that

Speed ,V= 286 km/h

`=286* (1000)/(3600)\ m/s`

V=79.44 m/s

Given that time ,t= 100 ms

t= 0.1 s

We know that ( if acceleration is zero)

Distance = Speed x time

d= V t

Now by putting the values in the above equation

d = 79.44 x 0.1 m

d= 7.944 m

We know that 1 m = 100 cm

d= 794.4 cm