Answer:
Speed = 10.24 m/s.
Step-by-step explanation:
Given the following data;
Distance = 100m
Time = 9.77
To find her speed;
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;

Substituting into the equation, we have;

Speed = 10.24 meter per seconds.