問4

(a)\(\frac{10-2}{5}=1.6\ \)m/s^2

(b)\(\frac{2-10}{5}=\ -1.6\ \)m/s^2

(c\(\frac{-10+2}{5}=\ -1.6\ \)m/s^2

(d)\(\frac{2-(-10)}{5}=1.6\ \)m/s^2

(e)\(\frac{-2-10}{5}=\ -2.4\ \)m/s^2

(f)\(\frac{10-(-2)}{5}=2.4\ \)m/s^2