Force and Motion Review 8th grade

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It occurs when an object speeds up, slows down, or changes direction.

Front

What is speed?

Back

Speed is the distance traveled by an object in a given amount of time, typically expressed in meters per second (m/s).

Front

What does Newton's 1st Law of Motion state?

Back

Newton's 1st Law states that an object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by an unbalanced force.

Front

What does Newton's 2nd Law of Motion state?

Back

Newton's 2nd Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What does Newton's 3rd Law of Motion state?

Back

Newton's 3rd Law states that for every action, there is an equal and opposite reaction.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to accelerate, change direction, or change shape. It occurs when the net force acting on an object is not zero.

Front

What is the formula for calculating force?

Back

The formula for calculating force is F = m * a, where F is force, m is mass, and a is acceleration.

Front

What is the difference between velocity and speed?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. It is directly related to the mass of the object.

Front

What is the relationship between mass and acceleration?

Back

According to Newton's 2nd Law, as mass increases, acceleration decreases for a given force. This means heavier objects require more force to accelerate.