Relative Velocity

Front

What is relative velocity?

Back

Relative velocity is the velocity of an object as observed from a particular reference point, often another moving object.

Front

How do you calculate the relative velocity of two objects moving in the same direction?

Back

Subtract the velocity of the slower object from the velocity of the faster object.

Front

How do you calculate the relative velocity of two objects moving in opposite directions?

Back

Add the velocities of both objects together.

Front

If a car is moving at 60 m/s and another car is moving at 80 m/s in the same direction, what is the relative velocity of the faster car to the slower car?

Back

20 m/s.

Front

If two objects are moving towards each other, one at 15 m/s and the other at 25 m/s, what is their relative velocity?

Back

40 m/s.

Front

What is the relative velocity of an object at rest to a moving observer?

Back

The relative velocity is equal to the velocity of the moving observer.

Front

If a train moves at 30 m/s East and a passenger throws a ball at 10 m/s West, what is the velocity of the ball relative to the ground?

Back

20 m/s East.

Front

What happens to the relative velocity if both objects are moving at the same speed in the same direction?

Back

The relative velocity is 0 m/s.

Front

How does wind affect the relative velocity of a moving object?

Back

Wind can either increase or decrease the relative velocity depending on its direction relative to the object's motion.

Front

If a person walks at 5 m/s North on a train moving at 10 m/s North, what is their velocity relative to the ground?

Back

15 m/s North.