Verified Answer :

TheHero

Average acceleration is given by:

a_average = V2 - V1/dt   = -15 +10/2 = -2.5 m/s^2

aachen

Answer:

\(a=-2.5 \ m/s^2.\)

Explanation:

It is given that.

Initial velocity, \(v_i=-10\ m/s\).

Final velocity, \(v_f=-15 \ m/s\).

Also, time taken during the process, \(t=2.0 \ s\).

So, average acceleration, a is given by:

\(a=\dfrac{v_f-v_i}{t}\)

Putting all the given values in above equation.

\(a=\dfrac{-15-(-10)}{2} \ m/s^2=-2.5 \ m/s^2.\)

Hence, it is the required solution.

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