Friction
Because the portion of tire touching the ground is not moving relative to the ground.
bowling ball
Friction from the air and ground will slow down the ball's motion.
The Bowling ball will hit the ground fist not because it has more mass but because it is less affected by wind resistance [resistance to its movement through the air] If the effect of wind resistance where [somehow] negated they would hit the ground at the same time. [The bag of potato chips: Open or closed? Assumed closed for this answer]
If they are released at the same time at the same height they will hit the ground at the same time.
Because the portion of tire touching the ground is not moving relative to the ground.
bowling ball
No. It is on even ground.
Assuming both were dropped from the same height above ground, in a vacuum both would hit the ground at the same time. In a significant atmosphere (e.g. average ground-level on Earch) the bowling ball would hit the ground first.
It would keep rolling.
No. They will hit the ground at the same time. The inertia for the heavier ball will be greater, but the acceleration for both will be the same, and both would (if the air resistance is the same for both) hit at the same time.
Rayleigh waves cause the ground to move with an elliptical, rolling motion.
Two continents have a greater gravitational force than two people due to their larger mass. Gravitational force is directly proportional to the mass of an object, so the continents would exert a stronger gravitational pull compared to two people.
No, Unless you put force behind them, neither. The lower gravity would cause them to just sit there were you let go of them. But if you did put force behind them; the bowling ball would hit the ground first, solely because of its weight and momentum.
Ice has a much smoother surface than the surface of the ground, therefore there is less friction acting on the hockey puck compared to a ball rolling on the ground. Ice is nearly a frictionless surface.
no
An earthquake.