It's____ ____ ____now.
宇航员站在某质量分布均匀的星球表面一斜坡上P点,沿水平方向以初速度v0抛出一个小球,测得小球经时间t落到斜坡另一点Q上,斜坡的倾角α,已知该星球的半径为R,引力常量为G,已知球的体积公式是V= 43 πR3.求:
B
Indoor Water Park
Opening time
◆9: 00a.m.--6:00p.m. from Monday to Friday
◆8: 00a.m.- 10: 00p.m. from Saturday to Sunday
Ticket price
◆Adults: 150 yuan/person: 130 yuan/member
◆Children: above 1.2 meters, 75 yuan/person; 60 yuan/member under 1.2 meters. free
Should not take
food, pets, knives, rings
Things to remember
◆Children under 1. 4 meters and old people above 60 should stay with other adults
◆You should follow the rules in the water park.
◆If you have some health problems and aren't suitable for water activities, you'd better not come in