The purpose of Hajj is to promote fellowship and equality to Muslims and people from all around the world who worship God. A tradition and condition to visit the Ka'ba, a holy site in Makkah, is to wear simple, white clothing for five days.
1) A ball is thrown with the speed of 10 m/s from the 1st stair. The height of each stair is 10cm and the width is 15 cm. on which stair the ball will fall
