Jeremy walked at an average rate of speed of 3 km/h. How far had Jeremy walked in 2 hours?
a. 2 km
b. 4 km
c. 5 km
d. 6 km

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.