a particle has been drop and another partcle has been thrown with initial velocity u in upward direction from the roof whose height has been given as 1000 m . Calculate the value id u required so that the two particle will hti the surface of each simultaneously
a particle has been drop and another partcle has been thrown with initial velocity u in upward direction from the roof whose height has been given as 1000 m . Calculate the value id u required so that the two particle will hti the surface of each simultaneously










