[填空题]
An asteroid of mass 49pkkk+mt ixq g s0(5h7 ak73prf q*bp/mtv jv gq8r53$ 1.0\times10^{ 5}$ traveling at a speed of relative to the Earth, hits the Earth at the equator tangentially, and in the direction of Earth’s rotation. Use angular momentum to estimate the percent change in the angular speed of the Earth as a result of the collision. $\times10^{-16 }$ %