8.6B Speed, Velocity and Acceleration

Front

What is the definition of Speed?

Back

Speed is the distance traveled per unit of time, regardless of direction. It is a scalar quantity.

Front

What is the definition of Velocity?

Back

Velocity is the speed of an object in a specific direction. It is a vector quantity.

Front

What is the definition of Acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can be positive (speeding up) or negative (slowing down).

Front

What is the formula for calculating Speed?

Back

Speed = Distance / Time

Front

What is the formula for calculating Velocity?

Back

Velocity = Displacement / Time

Front

What is the formula for calculating Acceleration?

Back

Acceleration = (Final Velocity - Initial Velocity) / Time

Front

If a car travels 100 meters in 5 seconds, what is its speed?

Back

Speed = 100 m / 5 s = 20 m/s

Front

If a car moves from 20 m/s to 60 m/s in 4 seconds, what is its acceleration?

Back

Acceleration = (60 m/s - 20 m/s) / 4 s = 10 m/s²

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

If a runner completes a lap of 400 meters in 50 seconds, what is their average speed?

Back

Average Speed = 400 m / 50 s = 8 m/s