1. A hiker starts out at a point we will call "ground zero". He hikes south for 6 2000m (in the negative direction). It takes him 30 min (1,800s). What is his velocity? Show your answer in m/s. 1.1m/s
-1.1m/s
-60m/s
-0.9m/s
200m/s​

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.