Why lysosomal enzymes did not digest cellular components in normal physiology?

Cellular structure and function

The membrane prevents enzymes from digesting cellular components and macromolecules. Lysosomal enzymes are activated at the acidic pH of the lysosome and inactivated at the higher pH of the cytosol. This protects the cell in case lysosomal enzymes are released into the cytoplasm.

Explanation:

hope it helps you :)

prolly a beacuse the momentuem the car has increases while going down hill