Question

it is difficult to walk on sand or ice.why?​

Answer 1

Answer:

this is because, on pushing , sand gets displaced and reaction from sandy ground is very little.in case of ice , force of reaction is again small , because friction between our feet and ice is very little.

Answer 2

Answer:

It is difficult to sit on sand or ice because of their ability of emphasizing with wether and surface itself is not in raw shape.