Question

The track star runs 100m at a rate of 10.4m/s. How long did it take to run 100m?

0.1 m/s
9.65
1040m/s
0.1s

Answer 1

Time, t = 9.615 secs.

Step-by-step explanation:

Speed can be defined as distance covered per unit time. Speed is a scalar quantity and as such it has magnitude but no direction.

Mathematically, speed is given by the equation;

`Speed = (distance)/(time)` ....equation 1

`Time = (distance)/(speed)` .....equation 2

Given the following data;

Distance = 100m

Speed = 10.4m/s

Substituting into equation 2;

`Time = (100)/(10.4)`

Time, t = 9.615 secs.