Question

corrosion is a natural process that converts a refined metat into a more chemically stable from such as oxide hydroxide or sulfide lt is the gradual destruction of materials by chemical and or electrochemical reaction with their environment​

Answer 1

This is a tough definition.You can write it in simple ways

Answer 2

Explanation:

when brakes are applied to a car moving with a velocity of 54 km^-1 it comes to rest within 2 metre. calculate the frictional resistance if mass of the car is 150 kg