A marathon runner runs a 200m sprint in 10 seconds. It is known that he started standing still. Then determine the acceleration achieved by him knowing that his final speed was 36 km / h.

The acceleration of the runner is 0.25 m/s²

Explanation:

Given;

distance covered by the runner, d = 200 m

time of motion, t = 10 s

initial velocity of the runner, u = 0 (he started standing still)

final velocity of the runner, v = 36 km/h = 10 m/s

Therefore, to achieve the final speed of the runner, his acceleration is calculated as follows;

v² = u² + 2as

10² = 0 + (2 x 200)a

100 = 400a

a = 100/400

a = 0.25 m/s²

The acceleration of the runner is 0.25 m/s²

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.