Question

An athlete uniformly increases his speed from rest at the rate of 1 m/s2. The time taken to complete 200 m race is​

Answer 1

Answer:

t = 20 sec

Explanation:

Given ,

u= o m/s

a = 1m/s

s = 200m

t= ?

solution = using equation

v^2 = u^2 + 2as

v^2 = 0^2+2× 1 × 200

v^2= 400

v = √400

v = 20 m /s

using equation

v= u+at

20 = 0 + 1 × t

20 = t

t = 20seconds

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