Next Generation Science Level 3 - Textbook B

Page 142

Think Deeply An object in space can remain in motion with no forces acting upon it. Explain why this is so.

Balanced and Unbalanced Forces In a game of tug-of-war, one team pulls the rope in one direction and the other team pulls the rope in the opposite direction. What happens if both teams pull with the same force? What happens when one team pulls with a stronger force than the other team? When both teams use the same amount of force in opposite directions, the forces cancel each other out. They are balanced forces. When the forces acting on an object are balanced, there is no change in motion.

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