Question

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Q Give Reasons
a) Friction causes wastage of energy.
b) It is difficult to walk on Ice.​

Answer 1

Answer:

yes friction causes wastage of energy because there is loss of energy in form of heat.

Yes it is difficult to walk on ice bcoz reduced amount of friction on ice due to it is comparatively hard for us to walk on it.

Answer 2

Answer:

1. Friction produces unnecessary heat leading to the wastage of energy. The force of friction acts in the opposite direction of motion, so friction slows down the motion of moving objects

2. It's difficult to walk on ice because there's very little friction between the bottoms of your shoes and the ice. Friction is a force that opposes motion. ... Since molecules in the liquid phase can move around freely water acts as a lubricant to fill in the imperfections in the surface and further decrease friction.

Explanation:

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