Problemas resueltos del examen final

enlace de ejercicios recomendados para el parcial

Del enlace siguiente, les recomiendo los ejercicios:  1, 2, 7, 8, 9, 10, 11 y 13

http://es.slideshare.net/EduardoMera1/guia-fisica113-energia


Del siguiente, es interesante el último

http://www.iesalandalus.com/joomla3/images/stories/FisicayQuimica/Fis2B/t1_trabajo_energia_ejercicios.pdf

Ayudas para el parcial

El de los tres niños arrojándose bolas de nieve.

Ejercicio del avión con el correo
Demasiado sencillo, un ejercicio así no sale en un parcial.

Ayuda con el ejercicio del tenista

Ayuda con el ejercicio del esquiador:  

Ejercicios de movimiento circular

Seguir el enlace que se anexa.

http://www.cajondeciencias.com/Descargas%20fisica/ER%20MCUA.pdf

Ejercicios de movimiento parabolico

1. Wilhem Tell, legendary archer and hero of Swiss independence, was forced to shoot at an Apple palced on his son´s head.   If Tell must stand 13 m from his son and he launches the arrow with a speed of vi = 58 m/s, at what  angle  θi above the horizontal should he point the arrow?  Assume the arrow starts at the same height as tha Apple and neglect air resistance.

2.A monkey is hanging from a branch in a tree 3 m away from a zookeeper and 2 m above the keeper´s hand (figure).   The keeper knows that the monkey always lets go of the branch just as the banana is thrown to it.  At what angle must the keeper throw the banana for the monkey to catch it?.

3. If the monkey of the exemple, stay in the tree on a branch 2 m. high, at what angle must the zookeeper throw the banana (at 8 m/s) for it to reach the monkey 3 m away. 

4. The skier leaves the snow with velocity 11 m/s, 23° below the horizontal, and lands on 55° slope below.  (figure).  Where and when does the land?  What is her velocity when she hits the snow?.  

5. In the movie, the god must be crazy, a bottle is thrown from a cliff overlooking  the Indian Ocean.  If the cliff is 0,5 km high,  and the bottle is thrown horizontally at an initial speed of 10 m/s what are the bottle position and velocity 0,5 s later?.   Neglecting effects of air resistance, find the distance from the bottom of the cliff at which the bottle hits the water.   Find its velocity just before impact. 

6. In a circus act, clowns are shot from a cannon at a constant speed v_o =  10.4 m/s.   The angle of launch may be varied.   What is the maximum distance D that a clown may travel, if the landing pad is at the same height as the mouth of the cannon?.   The circus master wants to shoot two clowns from his cannon, one after the other, and have them land on the same landing pad a distance D/2 away at the same time.   How can it be done? How long should be he wait to lunch the second clown?.   

7.  A tennis player standing 12 m from a net high hits a ball so as just to land inside the back line, 12 m beyond the net.  The initial height of the ball is 0,5 m.  Find the initial velocity and angle required for the ball just to clear the net.    

8.  On the moon, mail may be sent in cannister launched by mass drivers.  The settlement of Rimtown and Crater City are separated by steep cliff.    The Rimtown mass driver has a constant launch speed v_i and a maximum range  , where D is the horizontal distance to the cliff edge.  (Range here still means the horizontal distance a projectile would go between points at the same height).  What is the launch speed from the Rimtown mass driver?  At what minimum distance d from the cliff can the postmaster of Crater City locate the reception point for mail from Rimtown?.