Forces & friction /
Forces and friction
by Peter Riley.
- North Mankato, MN : Smart Apple Media, 2007.
- 32p. : col. ill. ; 28 cm
- Essential science .
Includes index.
Forces and friction -- Magnets -- Magnetic poles -- Gravity and weight -- Eastic materials -- Springs -- Friction -- Water resistance -- Air resistance -- Upthrust -- Balanced forces -- Unbalanced forces -- Can you remember the essentials?