A ball with a mass of 2 kg rolls on a flat surface. It starts rolling with an initial velocity of 2 m/s, and after a while, its velocity drops to 1.8 m/s. What is the final energy of the ball? a. 1.8 J
b. 4 J
c. 3.24 J
d. 2 J

Atemperature inversion can cause a warm air mass to move over a colder air mass. this traps the colder air mass and prevents surface air from rising. this may result in which of these? a) smog b) acid rain c) freezing rain d) a thunderstorm