Two objects A and B vertically thrown up with velocities 80m/s and 100m/s at two sec interval. where and when will they meet each other? ​

1)what causes the angle of the sun’s rays to change during the year on earth? 2)if you live in the southern hemisphere, during which months does autumn occur? 3)what is the difference between rotation and revolution? 4)season’s are caused by earth’s which of these occurs during a solar eclipse? 5)during the month of may, in the northern hemisphere, the where would you be on the surface of the earth is you were in complete darkness for twenty-four hours on december 21? 6)the gradual change in the length of your shadow over the course of the day is caused 7)which of the following occurs when the sun is directly above earth’s equator? in the northern hemisphere, the longest day occurs on