A 7 gram bullet, travelling horizontally at 380 m/s, pierces into your 2kg copy of Halliday, Resnick and Waller sitting on your table. The table and book have a coefficient of kinetic friction of k = 0.3 Find the distance, in meters, that the book and bullet will slide on the table before coming to rest.

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s