Speed, Velocity, Acceleration

Front

What is speed?

Back

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

Front

What is velocity?

Back

Velocity is the speed of an object in a specific direction. It is a vector quantity, meaning it has both magnitude and direction.

Front

What is 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 average speed?

Back

Average speed = Total distance / Total time.

Front

If a car travels 300 km in 3 hours, what is its average speed?

Back

Average speed = 300 km / 3 h = 100 km/h.

Front

What is the difference between speed and velocity?

Back

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

Front

What does it mean if an object has constant velocity?

Back

An object has constant velocity if it travels the same distance in equal intervals of time without changing direction.

Front

What is the unit of acceleration?

Back

The unit of acceleration is meters per second squared (m/s²).

Front

If a cyclist speeds up from 5 km/h to 15 km/h, what type of acceleration is this?

Back

This is positive acceleration because the speed is increasing.

Front

If a car slows down from 60 km/h to 30 km/h, what type of acceleration is this?

Back

This is negative acceleration (deceleration) because the speed is decreasing.