The flea's acceleration is 1,000 m/s².
<h3>Further explanation</h3>
The problem we overlook this time is about uniformly accelerated motion.
The list of variables to be considered is as follows.




Given that a take-off speed of 1.0 m/s over a distance of 0.50 mm.
The initial speed was zero from rest. It was asked about flea's acceleration when she extends her legs.
The formula we follow for this problem are as follows:

- a = acceleration (in m/s²)
- u = initial velocity = 0 m/s
- v = take off speed = 1.0 m/s
- d = distance travelled = 0.50 mm
Converted 0.50 mm to meters: 
<u>Steps:</u>
We set the formula so that the acceleration becomes the subject.




Substitute all data into equations.




We get the flea's acceleration, i.e., 1,000 m/s².
<h3>Learn more</h3>
- About scientific notation brainly.com/question/7263463
- Finding the mass of substance brainly.com/question/4053884
- Converting in cubic brainly.com/question/1446243
Keywords: flea, when jumping, rapidly extends its legs, take-off speed, initial velocity, distance, acceleration, uniformly accelerated motion, convert