Question

We observe that the wheels of buses and trucks are
1. Heavier and
2. Broader
than the wheels of car or scooters. Why?

Answer 1

as buses and truck have more mass than car and scooter due to which there is a lot of force on the roads and if the area of wheels are more then pressure will be less on road .

Answer 2

Because buses and trucks are heavier in weight so they need big heavy wheels with broader and the weight of cars and scooters are less so they need small and light weighted wheels.And if the wheels are small then the pressure will more on road.