What is the acceleration (in m/s2) of a car going around a 500 m radius turn at a speed of 25 m/s?
a) 1.25
b) 5.33
c) 0.333
d) 0.45

Atoms seldom exist as independent particles in nature a) as single particles, most atoms have low potential energy b) their electronegativity is much lower when they combine with other atoms c) atoms are more stable when they combine with other atoms d) neutral particles are rare