PS - Fall Exam Review

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a combination of two or more substances that remain distinct and can be easily separated, such as salad or a rock mixture.

Front

What are the types of friction?

Back

The types of friction include static friction (preventing motion), kinetic friction (during motion), rolling friction (when an object rolls), and fluid friction (when an object moves through a fluid).

Front

What happens to an object when unbalanced forces act on it?

Back

When unbalanced forces act on an object, it accelerates, meaning its velocity changes.

Front

What is freefall?

Back

Freefall is the motion of an object under the influence of gravitational force only, without any other forces acting on it.

Front

What occurs when forces are unbalanced?

Back

When forces are unbalanced, the object will accelerate in the direction of the net force.

Front

Define static friction.

Back

Static friction is the force that keeps an object at rest and prevents it from starting to move.

Front

Define kinetic friction.

Back

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

Front

What is rolling friction?

Back

Rolling friction is the resistance encountered when an object rolls over a surface.

Front

What is fluid friction?

Back

Fluid friction is the resistance experienced by an object moving through a fluid (liquid or gas).

Front

What is the effect of gravity on freefall?

Back

In freefall, gravity is the only force acting on the object, causing it to accelerate downwards at 9.81 m/s².