Superman does an exhibition run at a track meet. When he runs the 200 m
dash, he accelerates at 10 m/s/s for the entire distance. Approximately
how much time will it take him to run the 200 m? *

Question

contestada

Respuesta :

quasarJose quasarJose · Answer 1 · 2021-02-03T00:46:09+01:00

Answer:

6.32s

Explanation:

Given parameters:

Length of track and distance covered = 200m

Acceleration = 10m/s²

Unknown:

Time taken to cover the track = ?

Solution:

To solve this problem, we apply one of the motion equations as shown below:

S = ut + [tex]\frac{1}{2}[/tex] at²

S is the distance covered

t is the time taken

a the acceleration

u is the initial velocity

The initial velocity of Superman is 0;

So;

S = [tex]\frac{1}{2}[/tex] at²

200 = [tex]\frac{1}{2}[/tex] x 10 x t²

200 = 5t²

t² = 40

t = 6.32s