Пользуясь данными страница 99 вычисли со сколько времени потребуется самолет чтобы долететь от земли до луны и до солнца​

two friends were camping together of a river.  their names were jim and tim. tim was very lazy boy. on the first evening of their holiday, jim said to tim, "here’s some money. go and buy some meat."

"i’m too tired," answered tim. "you go." so jim went to buy the meat.

when he came back, he told tim that he must cook it.  but tim explained, "no, i’m not good at cooking. you must  do it." so jim fried the meat. than jim cut  the bread as tom did not want to do it. after that he offered his friend brung some water.this time tim replied: "no, i don’t want to get my clothes dirty"  .so jim got the water.

at last the meat was ready and    jim invited tim to eat it. 

"well, i can do that," - agreed   tim.   "i don’t like saying “no” all the time."

t=2π√(l/g)

20/40=2π√(0,4/g)

g=0.4*16*π²=63.1 м/с²