Why can airplanes fly?

Provides answers to such flight-related questions as "How do airplane wings work?" "What is thrust?" and "How do helicopters fly?"

Main Author: Jacobs, Marian B.
Format: Books Print Book
Language: English
Published: New York : PowerKids Press, 1999.
Edition: 1st ed.
Series: Library of why?
Subjects:
Summary: Provides answers to such flight-related questions as "How do airplane wings work?" "What is thrust?" and "How do helicopters fly?"
Item Description: Includes index.
Physical Description: 24 p. : col. ill. ; 19 cm.
ISBN: 0823952746