IN SOME SITUATIONS LIKE OPPOSE THE MOTION IN OTHER SITUATIONS L FACILITATE THE MOTION BUT L ALWAYS OPPOSE THE RELATIVE MOTION BETWEEN TWO MOVING SURFACES PUT SOME LUBRICANT AND L BECOME SMALL THERE MAKE THE RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

When the boats meet for the first time, they have sailed a combined distance that is equal to one length of the lake. When they meet the second time, they have sailed 3 lengths. The elapsed time and the distance for each is three times.

When they meet for the second time, the boat M has sailed 500 x 3 = 1500 yards. Now, this is 300 yards longer than the length of the lake, it must be 1200 yards wide.

The ration between the speed of boat M and boat N is equal to the ratio of the distance that they have sailed before they meet the first time. Did you answer this riddle correctly?
YES  NO  

Two minutes. The back of the train would be at the beginning of the tunnel after 1 minute, and would leave the end of the tunnel at the 2 minute mark. Did you answer this riddle correctly?
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Sleep. Its the time your mind organizes memories and knowledge. Sleep deprivation is miserable (as you well know if youve experienced it). If you miss a few nights of sleep, you can sleep more to catch up with no problems. And some believe that segmented sleep, where you sleep, wake for an hour, then go back to sleep, was the dominant form of sleep before the Industrial Revolution. Did you answer this riddle correctly?
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Every night he turns into a bat. Did you answer this riddle correctly?
YES  NO  

I am called habit. Did you answer this riddle correctly?
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Our words Did you answer this riddle correctly?
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Franklin. Its a list of the men on U.S. currency, $1, $2, $5, $10, $20 and $50. The $100 bill has Franklin. And an interesting tidbit is that Hamilton, along with Franklin, are the only two men in the list who did not serve as president. Did you answer this riddle correctly?
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A footprint Did you answer this riddle correctly?
YES  NO  

You grasp my handle and give me a push.
I rotate and roll, doing my job.
You put pressure on me,
and I cause division.
Then you enjoy the fruits of my labor,
while I lie, cast aside, feeling cheesy and red of face. Did you answer this riddle correctly?
YES  NO  

Ring Did you answer this riddle correctly?
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Chinese New Year Did you answer this riddle correctly?
YES  NO  

Tom puts one of his locks on the box with the ring in it. When Sally gets it she puts one of her own locks on the box and sends it back to Tom. Finally Tom takes his lock off of the box and sends it back to Sally who can then unlock her own lock and retrieve the ring. Did you answer this riddle correctly?
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Earth Did you answer this riddle correctly?
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Put your hands down its pockets and tickle its balls! Did you answer this riddle correctly?
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Money (coins specifically). Coins have two faces, heads and tails. People fight for money, and money travels far and wide. Kings live on when theyre depticted on a coin. Sharing money with others is a meaningful experience yet many people keep their money locked up. Did you answer this riddle correctly?
YES  NO