Physical Science 2nd Nine Weeks Semester Exam

Front

What is the relationship between force and acceleration according to Newton's second law?

Back

Force equals mass times acceleration (F = ma). This means that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Front

What is the definition of a medium in the context of wave propagation?

Back

A medium is the substance or material through which waves travel, such as air, water, or solid materials.

Front

What is the boiling point of a substance?

Back

The boiling point is the temperature at which a substance changes from a liquid to a gas.

Front

What is the melting point of a substance?

Back

The melting point is the temperature at which a substance changes from a solid to a liquid.

Front

How can increasing the force applied to an object affect its motion?

Back

Increasing the force applied to an object will increase its acceleration, causing it to move faster.

Front

What is the formula to calculate acceleration?

Back

Acceleration (a) can be calculated using the formula a = F/m, where F is the net force applied and m is the mass of the object.

Front

What is the unit of force in the International System of Units (SI)?

Back

The unit of force is the Newton (N).

Front

What happens to the acceleration of an object if the mass is increased while the force remains constant?

Back

If the mass of an object increases while the force remains constant, the acceleration will decrease.

Front

What is the significance of the slope of a distance-time graph?

Back

The slope of a distance-time graph represents the speed of the object; a steeper slope indicates a higher speed.

Front

What is the difference between speed and velocity?

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.