I need ans of this question​

Why is no-till farming more sustainable than many traditional methods of farming

What is the largest meteoroid that has collided with this planet

A12-g wad of sticky clay is hurled horizontally at a 100-g wooden block initially at rest on a horizontal surface. the clay sticks to the block. after impact, the block slides 7.5 m before coming to rest. if the coefficient of friction between the block and the surface is 0.65, what was the speed of the clay immediately before the impact?