Cobb, Vicki.
Why doesn't the earth fall up? / Vicki Cobb. - 1st ed. - [S.l.] : Dutton Juvenile, 1989. - 40 p. ; 21 cm.
Answers nine questions about motion, explaining Newton's Laws of Motion, gravity, centrifugal force, and other principles of movement.
Ages 4-8.
0525672532 (hardcover) $14.99 9780525672531 (hardcover)
531.11
Why doesn't the earth fall up? / Vicki Cobb. - 1st ed. - [S.l.] : Dutton Juvenile, 1989. - 40 p. ; 21 cm.
Answers nine questions about motion, explaining Newton's Laws of Motion, gravity, centrifugal force, and other principles of movement.
Ages 4-8.
0525672532 (hardcover) $14.99 9780525672531 (hardcover)
531.11