Usain Bolt won multiple gold medals in the 2008, 2012, and 2016 Olympic games for the 100 m and 200 m dash events and team relay races. In 2009, Bolt set the record for the fastest 200.0 m dash, with a time of 19.19 s. Calculate his average speed in both km/hr and mi./hr.

The velocity of car is 80.0 miles per hour. what is the velocity of car in meters per second? (1 km -0.621 miles) m/s

What are igneous intrusions and extrusions

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?