Question

why is sand thrown on roads covered with snow?

Answer 1

sand is thrown on roads covered with snow because when the tracks/ roads are covered with snow there is a reduction of friction between the tires of the vehicles and the road and during this situation it is dangerous to drive. when sand is thrown on the roads covered with snow then the friction increases between the road and the tire of the vehicle, and safe driving is possible.


hope it helped u

Answer 2

When the roads (or tracks) are covered with snow then there is considerable reduction of frictional force between the tyres of the vehicle and the road (or between the track and the wheels of the train) which leads to the skidding of the vehicles. Thus, driving is not safe. When sand is thrown on the snow covered tracks or roads then the force of friction increases, so safe driving is possible