Alex rode her skateboard to the library. Her velocity changed from 2 m/s west to 6 m/s west in 10 seconds. What was her acceleration?
A. 40 m/s2 west
B. 0.4 m/s2 west
C. 4 m/s2 west
D. 10 m/s2 west
SUBMIT

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus.b) the number of neutrons it contains in its nucleus.c) the number of protons it has in a cloud around the nucleus.d) the number of neutrons it has in a cloud around the nucleus.e) the number of electrons it exchanges with its neighbors.