(a) Explanation Given information: The final velocity ( v f ) of the airplane is 126 ft/s . Calculation: Show the a-v curve of the airplane as in Figure (1). Take the approximate value for acceleration ( a ) and velocity ( v ) using 5 regions from Figure 1. Tabulate the approximate value of acceleration ( a ) and velocity ( v ) as in Table (1). Region Velocity ( v 1 ) ( ft/s ) Velocity ( v 2 ) ( ft/s ) Acceleration ( a ) ( ft/s 2 ) 1 126 120 -12.5 2 120 100 -33 3 100 80 -45.5 4 80 40 -54 5 40 0 -58 Write the expression to Calculate the change in time ( Δ t ) : v 2 = v 1 + a ( t 2 − t 1 ) Here, t 2 is final time and t 1 is initial time. Rewrite the above equation. v 2 = v 1 + a ( Δ t ) Δ t = v 2 − v 1 a (1) Calculate the change ( Δ t ) in time for region (1): Substitute 120 ft/s for v 2 126 ft/s for v 1 and − 12 (b) To determine The distance ( x ) traveled in time 2.96 sec.

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ISBN: 9781260265453

Author: BEER

Publisher: MCG

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Chapter 11.3, Problem 11.83P

(a)

To determine

The time (t) required for the airplane to come to rest.

(b)

To determine

The distance (x) traveled in time 2.96 sec.

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Chapter 11.3, Problem 11.82P

Chapter 11.3, Problem 11.84P

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Chapter 11 Solutions

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The time ( t ) required for the airplane to come to rest.

Solution Summary: The author shows the a-v curve of the airplane as in Figure (1). Take the approximate value for acceleration (a) and velocity (v) using 5 regions from Figure 1.