Ahorse running at 3 m/s speeds up with a constant acceleration of 5 m/s2. how fast is the
horse going when it travels 15.3 m from where it started to accelerate.

The horse is going at 12.72 m/s speed.

Explanation:

The initial speed of the horse (u) = 3 m/s

The acceleration of the horse (a)= 5 m/

The displacement( it is assumed it is moving in a straight line)(s)= 15.3 m

Applying the second equation of motion to find out the time,

Solving this quadratic equation, we get time(t)=1.945 s, the other negative time is neglected.

Now applying first equation of motion, to find out the final velocity,

v=12.72 m/s

The horse travels at a speed of 12.72 m/s after covering the given distance.

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