Atrain is uniformly accelerated and passes successive kilometer stones with velocity of 18km/h and 36km/h respectively. caculate the velocity when it passes the third kilometer stone. also find the time taken for each of these two intervals of one kilometer.

Kinetic energy = 1/2mv^2. since the mass is constant we can form a ratio of it's kinetic energy at 60 divided by that at 30 to see ke(60)/ke(30) = +(60^2)/30^2). this may be said to 300% increase.

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