Physical Science Physics FINAL

Front

What is net force?

Back

The net force is the total force acting on an object after all the individual forces are combined. If the forces are balanced, the net force is 0 N.

Front

What is an insulator?

Back

An insulator is a material that does not allow electricity or heat to pass through it easily. Example: Glass.

Front

How do you calculate acceleration?

Back

Acceleration is calculated by the formula: (final velocity - initial velocity) / time. Example: (15 m/s - 5 m/s) / 3 s = 3.33 m/s².

Front

Why does a book on a car seat move forward when brakes are applied?

Back

The book continues moving forward because the brakes apply force only to the car, not to the book, due to inertia.

Front

What is average speed?

Back

Average speed is the total distance traveled divided by the total time taken. Example: 100 meters in 10 seconds = 10 m/s.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net force.

Front

What is the formula for calculating force?

Back

Force is calculated using the formula: Force = mass × acceleration (F = m × a).

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated by the formula: KE = 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state. Example: A book on a shelf has gravitational potential energy.

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.