Question

The figure shows a 1 kg block that slides off a 1.2m high table. The block starts off on the left edge of the table with an initial horizontal velocity of 3.0m/s. The dotted line shows the trajectory of the center of mass of the block. Assume that the block has to travel 2m on the table before sliding off and that the coefficient of kinetic friction is 0.2. The point O is at the right edge of the table, while the point A is the edge of the right leg.

   3.0m/s                                                        O

                                                                                                          y

                                                                                                                                 x

      

                                  1.2 m        

                                                                            A            

                                  2 m                                                                                                          

Answer the following noting that velocity is a vector quantity, so you need to calculate a magnitude and direction!

1. What is the velocity of the block just before it slides off the table?

b) What is the velocity of the block just before it strikes the floor?  

Answer 1