PNPS: Speed, Velocity, Acceleration

Front

What is the definition of speed?

Back

Speed is the distance traveled per unit of time, typically expressed in meters per second (m/s) or kilometers per hour (km/h).

Front

What is the definition of velocity?

Back

Velocity is the speed of an object in a specific direction, expressed in units such as meters per second (m/s) or miles per hour (mph).

Front

How do you calculate average speed?

Back

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

Front

What is the formula for calculating acceleration?

Back

Acceleration is calculated using the formula: Acceleration = (Final Velocity - Initial Velocity) / Time.

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 an example of speed?

Back

An example of speed is a car traveling at 60 km/h without any reference to direction.

Front

What is an example of velocity?

Back

An example of velocity is a car traveling at 60 km/h east.

Front

If a cyclist travels 40 km in 2 hours, what is their average speed?

Back

The average speed is 20 km/h (Average Speed = 40 km / 2 hours).

Front

How do you convert miles per hour (mph) to meters per second (m/s)?

Back

To convert mph to m/s, multiply the speed in mph by 0.44704.

Front

What is the significance of direction in velocity?

Back

Direction is significant in velocity because it determines the object's position relative to a reference point, making velocity a vector quantity.