Physics Semester Exam Review

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the formula p = mv.

Front

What is the law of conservation of momentum?

Back

The law states that the total momentum of a closed system remains constant if no external forces act on it.

Front

What is the SI unit of momentum?

Back

The SI unit of momentum is kilogram meter per second (kg·m/s).

Front

What is force?

Back

Force is an interaction that causes an object to change its velocity, defined as mass times acceleration (F = ma).

Front

What is the SI unit of force?

Back

The SI unit of force is the newton (N).

Front

What is frictional force?

Back

Frictional force is the force that opposes the relative motion of two surfaces in contact.

Front

What factors affect frictional force?

Back

Frictional force depends on the nature of the surfaces in contact and the normal force acting between them.

Front

How do you calculate the normal force?

Back

The normal force can be calculated by multiplying the mass of the object by the acceleration due to gravity (N = mg).

Front

What is a free-body diagram?

Back

A free-body diagram is a graphical representation used to visualize the forces acting on an object.

Front

What is the coefficient of friction?

Back

The coefficient of friction is a dimensionless scalar value that represents the frictional force between two bodies.