Speed, Velocity & Acceleration

Front

What is speed?

Back

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

Front

What is velocity?

Back

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

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can involve speeding up, slowing down, or changing direction.

Front

True or False: Acceleration only occurs when an object speeds up.

Back

False. Acceleration can also occur when an object slows down or changes direction.

Front

What are the three types of acceleration?

Back

1. Speeding up (positive acceleration) 2. Slowing down (negative acceleration) 3. Changing direction (centripetal acceleration)

Front

What is the formula to calculate speed?

Back

Speed = distance / time.

Front

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

Back

Speed = 100 meters / 5 seconds = 20 m/s.

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 happens to the velocity of an object if it is accelerating?

Back

The velocity of the object changes; it can increase or decrease depending on the direction of acceleration.

Front

What is uniform acceleration?

Back

Uniform acceleration occurs when an object's velocity changes at a constant rate.