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  3. problem 3 the velocity of a particle moving towards the...

Question: problem 3 the velocity of a particle moving towards the...

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Problem 3: The velocity of a particle moving towards the right along a straight line is given as u = kv r where k is a positive constant. The position of the particle at time t = 0 is r = 0. Find the acceleration of the particle as a function of time. Problem 4: A train of length 100 m is moving at a constant speed of 10 m/s. A second train, also of length 100 m is just behind the first train at time t 0 as shown in the diagram below. The second train is moving with a speed of 5 m/s and accelerating at 6m/s2. How long will the second train take to overtake the first train? 10 m/s Fst Second 5 m/s, and 5 m/s, and 6m/s Second t-???? s t0 s

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