Question

Two cars are travelling side by side down a straight road in the same direction. Both cars are travelling at a speed of 22m/s. What is their relative speed?

Answer 1

Answer:

Relative speed Rv = 0m/s

Explanation:

Given;

Both cars are travelling at a speed of 22m/s.

Relative speed is the speed of an object or person as view by the other (with respect to the other). It can also denote the difference between their speed when they are moving in the same direction;

Since in the case above, both cars are traveling in the same direction;

Rv = V1 - V2

V1 = 22 m/s

V2 = 22m/s

Rv = 22-22 m/s

Relative speed Rv = 0m/s

Answer 2

Answer:

0 m/s

Explanation:

Relative speed is defined as the speed of an object with respect with another object.

In other words, it is the speed of an object as viewed from the frame of reference of another object.

When two objects are moving in the same direction, their relative velocity is given as:

$V_{12} = V_1 - V_2$

where $V_1 =$ velocity of first object

$V_2 =$ velocity of second object

In the case of the two cars, $V_1 =$ $V_2 =$ 22 m/s

Therefore:

$V_{12} = 22 - 22 = 0 m/s$

Their relative velocity is 0 m/s.