Abody is thrown vertically upwards. its velocity keeps on decreasing. what happens to its kinetic energy when it reaches the maximum height?

When it reaches the maximum height, it's not moving up any more, and it's getting ready to start moving down. In between, there's an instant there when it's not moving at all. Kinetic energy depends on speed. So at the instant it's not moving, it has no kinetic energy. Zero. Nada.

c. rb

explanation:

the atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons.

temp rises, and expansion