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# Serving at a speed of 170 km/h, a tennis player hits the

ISBN: 9781938168000 42

## Solution for problem 37PE Chapter 3

College Physics | 1st Edition

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Problem 37PE

Serving at a speed of 170 km/h, a tennis player hits the ball at a height of 2.5 m and an angle θ below the horizontal. The service line is 11.9 m from the net, which is 0.91 m high. What is the angle θ such that the ball just crosses the net? Will the ball land in the service box, whose out line is 6.40 m from the net?

Step-by-Step Solution:

Step 1 of 5</p>

We have to find the angle  using given data

Given

x=211.9 m

y=2.5-0.9=1.4 m

g=-9.8 m/

v=170 km/h

Step 2 of 5</p>

We have kinematic equation

Step 3 of 5</p>

Use the kinematic equation to find ‘t’

Now find

Step 4 of 5

Step 5 of 5

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