speed, velocity, acceleration

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It occurs when an object speeds up, slows down, or changes direction.

Front

What is speed?

Back

Speed is a scalar quantity that refers to how fast an object is moving, measured as distance traveled per unit of time.

Front

What is velocity?

Back

Velocity is a vector quantity that refers to the speed of an object in a specific direction.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is the unit of speed in the metric system?

Back

The unit of speed in the metric system is meters per second (m/s) or kilometers per hour (km/h).

Front

If a car travels 100 km in 2 hours, what is its average speed?

Back

Average speed = 100 km / 2 h = 50 km/h.

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 the unit of acceleration?

Back

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

Front

What does a positive acceleration indicate?

Back

A positive acceleration indicates that an object is speeding up.

Front

What does a negative acceleration indicate?

Back

A negative acceleration (deceleration) indicates that an object is slowing down.