Chapter 1.3, Problem 44E

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10th Edition

Soo T. Tan

ISBN: 9781285464640

Textbook Problem

**Watching a Rocket Launch** At a distance of 4000 ft from the launch site, a spectator is observing a rocket being launched. Suppose the rocket lifts off vertically and reaches an altitude of *x* ft (see the accompanying figure).

**a.**Find an expression giving the distance between the spectator and the rocket.**b.**What is the distance between the spectator and the rocket when the rocket reaches an altitude of 20,000 ft?

(a)

To determine

**To find:** The expression of distance between the spectator and rocket.

Explanation

**Given information:**

A spectator observed a rocket being launch from distance of 4000 ft from launch. The rocket lifts off vertically and reaches an altitude of *x* ft.

**Calculation:**

Let the distance between spectator and rocket be *d*. Use Pythagoras theorem to evaluate the value of *d*.

The formula to calculate the distance from Pythagoras theorem is,

(b)

To determine

**To find:** The distance between the spectator and rocket when rocket reaches an altitude of 20,000 ft.

Sect-1.1 P-1ESect-1.1 P-2ESect-1.1 P-3ESect-1.1 P-4ESect-1.1 P-5ESect-1.1 P-6ESect-1.1 P-7ESect-1.1 P-8ESect-1.1 P-9ESect-1.1 P-10E

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