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At a time t = 3 minutes a train has a velocity of v = 40 m/s, at t = 4 minutes it has a velocity of v = 65 m/s. What is the train's average acceleration in m/s^2?

Respuesta :

Answer:

Acceleration of the car will be 25 [tex]m/sec^2[/tex]

Explanation:

We have given velocity of train at t =3 sec v= 40 m/sec

And velocity of train at t = 4 sec v = 65 m/sec

So change in velocity dv= 65 -40 = 25 m/sec

Change in time dt = 4-3 = 1 sec

We know that acceleration is rate of change of velocity

So acceleration [tex]a=\frac{25}{1}=25m/sec^2[/tex]

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