It takes longer for a heavier car to stop than it does a lighter one. Velocity increases as mass increases in turn increasing the time needed to stop (trains, semi trucks).
heavier because they are two different weights
Helium is lighter than air
tungsten is more more heavier han the lead as it has great mass in less volume
LIGHTER
Just, simply, Lighter than Air Vehicles are lighter than air, so that makes them fly, and Heavier than air vehicles are heavier than air, but they use airfoils on the wings to fly.
To make the lighter ball harder to stop than the heavier ball, you can increase the lighter ball's velocity or decrease the heavier ball's velocity. This strategy exploits the kinetic energy of the moving objects, as the faster-moving lighter ball will have more kinetic energy that needs to be dissipated upon impact, making it harder to stop. Additionally, you can manipulate the surface material or shape of the balls to affect their friction and bounce properties, impacting how quickly they come to a stop.
rhenium
hydrogen
One is lighter and the other one is heavier. :D
Tritium is lighter than deuterium. Tritium is a hydrogen isotope with one proton and two neutrons, making it heavier than regular hydrogen but lighter than deuterium, which has one proton and one neutron.
Nitrous Oxide is heavier than air.
It is way lighter than after you start eating it