1. when a star collapses to form a black hole, its mass
a. decreases
b. remains the same

B: The black hole does not give off mass, it only becomes smaller and denser. Hence why the gravity is so strong.

It does not have anymore fuel to burn and that is why it collapses. I think it is a. decreases

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.

compass can be used day and night, cloudy or sunny