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3 years ago

10

A world-class tennis player can serve a tennis ball at 130 mi/h mi/h (about 58 m/s m/s ). The length of a tennis court is 78 ft

ft . Approximately how long does an opponent have to react from the instant the ball is served until the ball reaches the opponent?.

1 answer:

riadik2000 [5.3K]3 years ago

8 0

Answer:

The time taken is $t = 0.4103 \ s$

Explanation:

From the question we are told that

The speed is $v = 130 \ mi/h = 58 \ m/s$

The length of the tennis court $l = 78 \ ft = \frac{78}{3.281}= 23.8 \ m$

Generally the time taken is mathematically represented as

$t = \frac{ 23.8}{ 58}$

=> $t = 0.4103 \ s$

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