01140cam a2200301 4500 91641042 TxAuBib 20100819120000.0 090928s2011||||||||||||||||||||||||eng|u 2009037698 9780761354314 lib. bdg. : alk. paper 076135431X lib. bdg. : alk. paper (OCoLC)693106950 DLC DLC TxAuBib Boothroyd, Jennifer, 1972- Forces / by Jennifer Boothroyd. Minneapolis : Lerner Publications Co., 2011. 32 p. : col. ill. ; 27 cm. Lightning bolt books. First physics Includes bibliographical references (p. 31) and index. Pushes and pulls -- Putting things in motion -- Direction and speed -- Friction -- Changing shape -- Activity. 20100819. Force and energy Juvenile literature. Motion Juvenile literature. Friction Juvenile literature. Lightning bolt books. First physics. TXTLL