Speed, Velocity and Acceleration

Front

What is speed?

Back

Speed is the distance traveled per unit of time, typically measured in units like miles per hour (mph) 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 occurs when an object speeds up, slows down, or changes direction.

Front

What is the formula to calculate speed?

Back

Speed = distance/time.

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

If a car travels 60 miles in 1 hour, what is its speed?

Back

Speed = distance/time = 60 miles/1 hour = 60 mph.

Front

What happens to the velocity of an object when it changes direction?

Back

The velocity of an object changes when it changes direction, even if its speed remains constant.

Front

What is uniform acceleration?

Back

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

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 10 m/s to 15 m/s in 5 seconds, what is the acceleration?

Back

Acceleration = (final velocity - initial velocity) / time = (15 m/s - 10 m/s) / 5 s = 1 m/s².