2024 Unit Test: Newton's Laws (Open Notes)

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Front

Define static friction.

Back

Static friction is the force that resists the initiation of sliding motion between two surfaces that are in contact and at rest.

Front

What is the difference between static friction and kinetic friction?

Back

Static friction acts on objects that are not moving, while kinetic friction acts on objects that are sliding over each other.

Front

What is the formula for calculating frictional force?

Back

Frictional force (f) = coefficient of friction (μ) × normal force (N).

Front

What does a position-time graph represent?

Back

A position-time graph shows how the position of an object changes over time, indicating its velocity.

Front

What is the significance of the slope in a position-time graph?

Back

The slope of a position-time graph represents the velocity of the object.

Front

What is the role of unbalanced forces in motion?

Back

Unbalanced forces cause an object to accelerate, changing its velocity.

Front

Explain the concept of inertia.

Back

Inertia is the tendency of an object to resist changes in its state of motion; it is directly related to the object's mass.

Front

What is kinetic friction?

Back

Kinetic friction is the force that opposes the motion of two surfaces sliding past each other.

Front

How does surface roughness affect friction?

Back

Rougher surfaces generally have higher friction due to increased interlocking of surface irregularities.