Exam Review Physical Science Semester 1

Front

What is the formula for calculating work done?

Back

Work (W) = Force (F) × Distance (d) in Joules (J)

Front

What is the definition of reflected light?

Back

Reflected light is the light that bounces off an object and reaches our eyes, allowing us to see the color of the object.

Front

What force pulls objects toward the Earth?

Back

Gravity is the force that pulls objects downward toward the center of the Earth.

Front

How do you calculate average speed?

Back

Average Speed = Total Distance / Total Time.

Front

What does Newton's 2nd law of motion state?

Back

Newton's 2nd law states that Force equals mass times acceleration (F = ma). A greater force results in greater acceleration.

Front

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

Back

The unit of work is the Joule (J).

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

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.

Front

What is the role of friction in motion?

Back

Friction is a force that opposes the motion of an object, acting in the opposite direction of the movement.

Front

What is the relationship between force and acceleration?

Back

Force is directly proportional to acceleration; if the mass is constant, increasing the force increases the acceleration.