Un tren parte de un punto kilometrico 0 alas 00 horas despues de rrecorrer 49 kilometros en untiempo 0.5 horas se averia porloque deve detenerse los empleados de mantenimiento arreglan la aberia en 1 hora en ese momento el tren reanuda la marcha y llega alas 23.30 horas ala estacion de destino situada en el puto kilometrico 25

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Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.