Question

a bird flies 320 m south in 45s. what is the bird’s velocity?
0.14 m/s
7.1 m/s
0.14 m/s south
7.1 m/s south

Explanation:

Step1: Recall the formula for velocity

Velocity \(v=\frac{d}{t}\), where \(d\) is displacement and \(t\) is time.

Step2: Substitute the given values

Given \(d = 320\space m\) (south) and \(t=45\space s\). Then \(v=\frac{320}{45}\approx7.1\space m/s\). Since velocity is a vector quantity, direction (south) must be included.

Answer:

\(7.1\space m/s\) south