Science 4
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7.1 What is Force
7.2 Effects of Force
7.2 Effects of Force
7.2.1 Force and Change in Motions
7.2.2 Force and Change in Direction of Working Object
7.2.3 Force and Change in Shape of the Object
7.2.4 Distance and Speed
7.3 Simple Machines
7.3 Simple Machines
7.3.1 Lever
7.3.2 Pulley
7.3.3 Inclide Plane
7.3.4 Wheel and Axle
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