Question

What is the speed of the animal from 0-20s?

50 m/s
0.4 m/s
20 m/s
2.5 m/s

Answer 1

2.5 m/s

Step-by-step explanation:

The speed of the animal is given by the ratio between the distance travelled by the animal and the time elapsed:

`v=(d)/(t)`

where d is the distance travelled and t the time elapsed. Note that this quantity is also equal to the slope of the curve.

In the time interval 0-20 s, we have

d = 50 m - 0 m = 50 m

t = 20 s - 0 s = 20 s

So, the speed is

`v=(50 m)/(20 s)=2.5 m/s`