Adog is chasing a cat toward a tree the cat has a 10 yard lead and runs at a speed of 6 yards per second. the dog runs at a speed of 8 yards per second. the tree is 30 yards away from the dog starting position. which animal will reach the tree first

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.

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.