Author: Anonymous

Compute the position of the Center of Mass for the system of 8 masses. (note the origin is the center of the bottom left mass).   

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

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

A block is on a surface with the coefficient of friction

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 

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 .  

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.       

Vocabulario.  Match the prictures with the corresponding descriptions. 1. [1] 2. [2] 3. [3] 4. [4] 5. [5]