Physics 8 Quarter 1 Review

Front

What does Newton's third law of motion state?

Back

For every action, there is an opposite, but equal reaction.

Front

When an object is dropped, what is the direction of its velocity and acceleration?

Back

Both the velocity and acceleration are in the same direction (downwards).

Front

If a ball is moving downwards, what is the direction of the acceleration vector?

Back

The acceleration vector is downwards.

Front

Who moved the fastest in a 3-second race: a biker, a runner, or a walker?

Back

The biker moved the fastest.

Front

What happens to the velocity of a textbook dropped from a height as it falls?

Back

The velocity increases as it falls.

Front

Define acceleration in physics.

Back

Acceleration is the rate of change of velocity of an object with respect to time.

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) = (Final Velocity - Initial Velocity) / Time.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

Front

What is gravitational acceleration near the Earth's surface?

Back

Approximately 9.81 m/s².

Front

What is inertia?

Back

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