Adriver averaged 64 mph and took 3½ hours to travel from st. louis to chicago. based on this, what is the distance between st. louis and chicago

Average speed of the driver is given as

if he moved for total time t = 3.5 hours

so the distance between the tow is given as

so the distance between St. Louis and Chicago is 224 miles

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.