Speeding Up, Slowing DownBook - 2014
"How do you change the speed of a moving object? This interesting book explains how forces, such as friction, and the mass of an object, can change the speed of an object in motion. Simple activities help children understand such concepts as acceleration and deceleration"--Provided by publisher.
Publisher: Catharines, Ont. : Crabtree Pub. Co., c2014.
Characteristics: 24 p. : col. ill. --