Why Cant I Get Afn In My Chu

few more exercise can only be good ...

hello guys I've found (rather stolen ...) in network, through my very personal sources, the next task of General Physics I . These are the problems:

1. A 7 year old child is walking down a street (similar to an inclined plane with a = 45 °) with his bike. After a time t = 105 s there is the separation of the right wheel. Having purchased the bike acceleration of 50 m / s ^ 2, reaches the bottom of the hill with speed ' constant of 176.5 km / s. After the descent (3.5 km) the child crosses the road ss 25 and is hit by a truck with trailer (Iveco Turbostar 325 from 80 tons.) Traveling at speed 'constant of 145 km / h. Taking into account that the driver was talking to a whore who had uploaded 2 Km before, calculate: What
exclaimed the child at time t = 105S;
If the collision and 'elastic state, the equation of motion of body of the child;
After how many miles the truck driver sees bump;
What the child had eaten for breakfast;
What are the names the baby and the truck driver;
The name of the lady who had her head on the knees of the driver.

2. A helium-filled balloon is inflated using a cylinder of mass m = 40 kg. Knowing that the pressure inside the cylinder and 'of 70 atm, determine:
The amount' of gas inside the cylinder;
The days of hospital in the balloon;
demonstrate that helium has reacted to legitimize defense
If the ball inflated is made to fly, how high it explodes assuming that bear a maximum pressure variation of 10 Pa.

3. Calculate the motion of a projectile launched from the ground at an angle of 45 °, by a soldier who had his gun jammed. Knowing that the projectile had a mass m = 1kg, the soldier's name was Frank and that he would discharged After 20 days, to determine:
The value of the angular momentum of the projectile to the axis of rotation (land);
How many people manage to kill the bullet;
Chief of Staff of the army at that time.

4. A girl aged 21 has the cycle. Say: If the cycle
and 'a Carnot cycle;
If so, how and' made the Carnot engine;
If you like the Carnot engine;
If you would like to do some work on the Carnot engine and has the sign work
How has the waste Carnot engine;
How long does the cycle;
Tampax many uses;
Who knocks at first base;
What is the name.

5. An elevator piston works at constant pressure (750 torr) along a 45 km high skyscraper. Inside there are two people: Mario and Silvia, respectively, with mass m1 = 75 kg, m2 = 52 kg. Knowing that:
The elevator is similar to a damped oscillator with D = (b2-4 Km) / 4m2 <0; Mario e' eccitato; Silvia e' vergine; L'ascensore e' profumato; Entrambi hanno mangiato fragole con limone.Stabilire: La reazione normale di Mario; Il tempo di erezione di Mario; La quantita' di calore scambiato; Il ciclo di Silvia (nel caso di reversibilità); Come lei chiamera' il bambino.

source (http://www.ersito.com/robba/robbatxtview.php3?testidivertenti=15)