Question

An airplane 30,000 feet above the ground begins descending at a rate of 2000 feet per minute. Assume that plane continues at the same rate of descent.

A) Find the altitude after 5 minutes.
B) Find the altitude after 8 minutes.
C) Find the altitude after 12 minutes.
D) Determine how long it will take for the plane to hit the ground and crash.

Answer 1

Explanation:

h(t)=30000-2000t

A) h(5)=30000-2000(5)=20000ft

B) h(8)=30000-2000(8)=14000ft

C) h(12)=30000-2000(12)=6000ft

D) 30000-2000t=0

2000t=30000

t=15 minutes.

Answer 2

D) Determine how long it will take for the plane to hit the ground and crash

Explanation: