nt acceleration g = 9.81 m/s2, determine (a) the time t1, (b) the velocity of B relative to A at

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Two rockets are launched at a fireworks display. Rocket A is launched with an initial velocity v0 = 100 m/s and rocket B is launched t1 s later with the same initial velocity. The two rockets are timed to explode simultaneously at a height of 300 m as A is falling and B is rising. Assuming a constant acceleration g = 9.81 m/s2, determine (a) the time t1, (b) the velocity of B relative to A at the time of the explosion.

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