According to the third law of motion, when we push on an object, the object pushes back on us with an equal and opposite force. If the object is a massive truck parked along the roadside, it will probably not move. A student justifies this by answering that the two opposite and equal forces cancel each other. Comment on this logic and explain why the truck does not move.

Explanation

To address the question regarding why a massive truck does not move when a person pushes against it, despite the fact that the person and the truck exert equal and opposite forces on each other, we can break down the explanation into several steps:

### Step 1: Understanding Newton's Third Law of Motion
According to Newton's Third Law of Motion, for every action, there is an equal and opposite reaction. This means that when you push on an object, that object pushes back with an equal force in the opposite direction.

### Step 2: Identifying the Forces Involved
When a person pushes the truck, they exert a force on the truck. Simultaneously, the truck exerts an equal and opposite force back on the person. These forces are action-reaction pairs, but they act on different objects (the person and the truck).

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