A man is standing still on ice (there is no friction between the ice and anything that it touches). The man throws a medicine ball from chest height, with a velocity, vx in horizontal direction and vy in the vertical direction. Describe what happens. Describe the Motion of the center of gravity of the system. Include as much detail as possible. How fast does the CoM accelerate?

A particle starts from a rest and accelerates at

A block is on a surface with the coefficient of friction

The vectors associated with angular acceleration and velocity are in the direction of what?

4 Bowling Balls are sitting on a table, one falls off and starts to drop. How fast is the center of mass of the system (the 4 bowling balls dropping) in g’s?

In the absence of external forces, the linear momentum is 

Show all your work, include relevant equations.    Question: At a given instant, the belt is moving with velocity of 2 m/s.  The magnitude of the acceleration at point A is 125 m/s2. Compute the angular acceleration of the wheel.       

Please write out your solution on a separate piece of paper and submit it in a separate assignment. You’ll have 15 minutes after the exam period to scan and send it.  Please be neat and include all the relevant equations.   This question is worth 15 points.   Question: Pool Ball A is moving in the y direction at 2 m/s when it collides with Pool Ball B. Both have the same mass, and for the sake of computations identical. The directions of the resulting velocities are shown below. Compute .  

Vocabulario.  Select the one that does not belong. 1. [1] 2. [2] 3. [3] 4. [4] 5. [5]

Lectura. Clara invitó a sus amigas a comer en un restaurante que está cerca de la universidad. Decidieron compartir varios platos. Pidieron camarones fritos, queso y verduras con salsa de yogur como entremeses. También pidieron una ensalada con aceite y vinagre. Bebieron agua mineral. Después el camarero les sirvió chuletas de cerdo con papas al horno (baked) y pimientos rellenos de langosta (stuffed peppers). Como la comida y el servicio (service) fueron excelentes, Clara y sus amigas le dejaron una muy buena propina al camarero. 1. [1] ¿Dónde está el restaurante? 2. [2] Las amigas decidieron… 3. [3] ¿Qué tipo de ensalada pidieron? 4. [4] ¿Qué bebieron? 5. [5] ¿Con qué les sirvieron las chuletas de cerdo? 6. [6] Como la comida y el servicio fueron excelentes…