Question

a girl running a race accelerates at 2.5m/s² for the first 4sec of the race. How far does she travel in this time​

Answer 1

Answer:

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Answer 2

Answer:

We have,

distance (s) = ?

Time = (t) = 4 seconds

Acceleration (a) = 2.5m/s²

Initial velocity (u) = 0 (the girl started the race)

So, by using second equation of motion we have,

s = ut + at²

s = 0*4 +  

s = 0 + 20

s = 20

So, the distance travelled by the girl is 20 m.

Explanation:

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