Physics 7.7A-D

Front

What is average speed?

Back

Average speed is calculated by dividing the total distance traveled by the total time taken. Formula: Average Speed = Total Distance / Total Time.

Front

What are the units of speed?

Back

Common units of speed include kilometers per hour (km/hr), meters per second (m/s), and miles per hour (mi/hr).

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 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 an external force.

Front

According to Newton's first law, what happens to an object when no net force acts on it?

Back

The object will maintain its current state of motion, either remaining at rest or moving at a constant velocity.

Front

How do you calculate average speed from a distance-time graph?

Back

Average speed can be calculated by finding the slope of the line on a distance-time graph, which represents the total distance divided by the total time.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is a scalar quantity?

Back

A scalar quantity is a physical quantity that has only magnitude and no direction, such as speed, mass, and temperature.

Front

What is a vector quantity?

Back

A vector quantity is a physical quantity that has both magnitude and direction, such as velocity, force, and acceleration.

Front

What is the average speed of a sea turtle that travels 12 km in 3 days?

Back

Average speed = Total Distance / Total Time = 12 km / 3 days = 4 km/day.