Distance, Displacement, Speed, and Velocity

Front

What is the difference between distance and displacement?

Back

Distance is a scalar quantity representing the total path length traveled, while displacement is a vector quantity representing the shortest straight-line distance from the initial to the final position.

Front

What is the formula for calculating average speed?

Back

Average speed = Total distance traveled / Total time taken.

Front

If an object travels 100 m in 20 seconds, what is its average speed?

Back

Average speed = 100 m / 20 s = 5 m/s.

Front

What is velocity?

Back

Velocity is a vector quantity that refers to the rate at which an object changes its position, including direction.

Front

How can displacement be zero?

Back

Displacement can be zero if the initial and final positions of an object are the same, regardless of the distance traveled.

Front

What is the unit of speed?

Back

The unit of speed is meters per second (m/s).

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that only has magnitude, while velocity is a vector quantity that has both magnitude and direction.

Front

If a car travels 150 km north in 2 hours, what is its average velocity?

Back

Average velocity = 150 km north / 2 h = 75 km/h north.

Front

How do you calculate the time taken to travel a certain distance at a constant speed?

Back

Time = Distance / Speed.

Front

If a runner completes a 400 m lap in 50 seconds, what is their average speed?

Back

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