Toys and Forces Forces make toys work Forces make toys start moving change direction speed up slow down and stop moving Forces also change the shape of some toys Bouncing toys Floating toys Flying toys Rolling toys Sliding toys Spinning toys None of these toys would work without forces 4
What Is a Force A force is a push or a pull When you push something it moves away from you When you pull something it moves towards you When this girl applies a pushing force to the toboggan it moves away from her When this boy applies a pulling force to the sled it moves toward him 5
How Does a Sliding Toy Work A sliding toy works when a pushing or pulling force makes it slide over a surface The toy is designed so that the force of friction is reduced This helps it slide A toboggan can slide over snow because there is not much friction 6
7 The smoother a surface the less friction it creates For a toy to slide the toy’s surface and the surface it is sliding over must both be smooth The snow saucer slides because its surface and the surface of the snow are both smooth smooth surface of snow saucer smooth snow
