Unit Test 2 Review

Front

What is the force that always acts in the opposite direction of movement?

Back

Friction is the force that opposes motion.

Front

When a box slides down an inclined plane, what forces are acting on it?

Back

Gravity and friction are the two forces acting on the box.

Front

What indicates that a chemical reaction has occurred?

Back

Evidence such as color change, gas production, temperature change, or precipitate formation indicates a chemical reaction.

Front

In a given diagram, if the motion is indicated to the left, what does that imply?

Back

It implies that the object is moving towards the left direction.

Front

Why does a person move when pushing against a wall, but the wall does not move?

Back

The wall has more mass than the person, resulting in less acceleration for the wall.

Front

What is the definition of friction?

Back

Friction is the resistance that one surface or object encounters when moving over another.

Front

What role does gravity play in motion on an inclined plane?

Back

Gravity pulls objects downwards, causing them to accelerate down the incline.

Front

What are the signs of a chemical reaction?

Back

Signs include color change, gas production, temperature change, and formation of a precipitate.

Front

What is Newton's third law of motion?

Back

For every action, there is an equal and opposite reaction.

Front

How does mass affect the motion of an object?

Back

Greater mass results in less acceleration for the same applied force, according to Newton's second law.