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.
This is Book 3 in the Motion Close-Up Series. See all Motion Close-Up books here.
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The second book in a fabulous new magical, middle-grade series filled with adventure, wonder and wildness,
