Bacteria are organisms that need to be viewed with a microscope. Darla designed a model of bacteria using household items such as macaroni and string. Which best describes the advantage of her model? She was able to represent something small in a larger way. She was able to represent something large in a smaller way. She made the model so she could then use the microscope. She made the model so she could notice patterns.

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.