Velocity: Heather and Matthew take 45 s to

walkeastward along a straight road to a store 72 m away. What id

theiraverage velocity?

The velocity of Heather and Matthew is 1.6 m/s eastward.

Explanation:

Velocity: This is the time rate of displacement. The S. I unit of velocity is m/s.

Velocity is a vector quantity because it can be represented by magnitude and as well as direction. The mathematical expression for velocity is given below

V = d/t ... Equation 1

Where V = velocity of Heather and Matthew, d = displacement of heather and Matthew, t = time.

Given: d = 72 m eastward, t = 45 s.

Substituting these values into equation 1

V = 72/45

V = 1.6 m/s eastward.

Thus the velocity of Heather and Matthew is 1.6 m/s eastward.