The distance covered by the runner after starting from rest is 39.74 m/s².
The real route length of a moving particle or object is referred to as distance. The shortest distance between a body's initial and final positions is referred to as displacement. Speed is the amount of distance a particle travels in one unit of time.
The constant acceleration of a runner is 1.1 m/s².
The runner maintains the constant acceleration for 8.5 seconds.
So,
a = 1.1 m/s²
t = 8.4 seconds
Since the runner starts from the rest.
Therefore, the initial velocity u = 0 m/s
Using the equation of motion,
s = ut + (1/2) × a × t²
s = 0 × 8.5 + ( 1/2 ) × 1.1 × 8.5 × 8.5
s = ( 1/2 ) × 79.475
s = 39.737 m/s²
s = 39.74 m/s²
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