Arolling ball has an initial velocity of 5 meters per second. 30 seconds later, its velocity it 2 meters per second. what is the acceleration of the ball?
-1
-0.2
5

Which of the following correctly describes the early view of catastrophism?

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Examine the nuclear reacti why is this classified as a nuclear reaction rather than a chemical reaction? it is not balanced. a new compound is formed. a change has occurred in a nucleus. a new element has been formed.