A big stone and small are dropped from the roof of the house at the same time. Which one will reach the ground first(ignore the effect of air)?An object is thrown vertically upwards and rises to a height of 10m. Calculate the velocity with which the object was thrown upwards? Take g=9.8 metre per second square. OR Find out how the acceleration due to gravitation varies as one goes to a depth "d" inside the earth from the surface. (3)
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