Speed and Velocity

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both the speed of the object and the direction of its motion.

Front

Define acceleration in the context of motion.

Back

Acceleration is the rate of change of velocity of an object with respect to time. It can occur as an increase or decrease in speed or a change in direction.

Front

How do you calculate average speed?

Back

Average speed is calculated by dividing the total distance traveled by the total time taken. Formula: Average Speed = Total Distance / Total 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).

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

If a car travels 150 kilometers in 3 hours, what is its average speed?

Back

Average speed = 150 km / 3 hr = 50 km/hr.

Front

What is the significance of direction in velocity?

Back

Direction is significant in velocity because it determines the object's displacement and how it relates to its overall motion.

Front

What is the average speed of a runner who completes a 400-meter track in 50 seconds?

Back

Average speed = 400 m / 50 s = 8 m/s.

Front

How does acceleration relate to changes in speed?

Back

Acceleration indicates how quickly an object's speed is changing. Positive acceleration means an increase in speed, while negative acceleration (deceleration) means a decrease in speed.

Front

What is the speed of an object that travels 120 meters in 10 seconds?

Back

Speed = 120 m / 10 s = 12 m/s.