Question

this graph shows the displacements and times for the winner of a horse race. what was the average speed of the horse that won the race? 0.05 m/s 20 m/s 45 m/s 285 m/s displacement vs. time for the winner of a horse race distance (m) 0 5 10 15 20 25 time (s)

Explanation:

Step1: Identify formula for average speed

The formula for average speed is $v = \frac{d}{t}$, where $v$ is average speed, $d$ is total distance, and $t$ is total time.

Step2: Determine distance and time from graph

From the graph, the total distance $d = 300$ m and the total time $t=15$ s.

Step3: Calculate average speed

Substitute values into formula: $v=\frac{300}{15}=20$ m/s.

Answer:

20 m/s