## Physics: Principles with Applications (7th Edition)

a. $6.52 \frac{m}{s^{2}}$ b. $8.45 \times 10^{4} \frac{km}{h^{2}}$
a. Find the average acceleration from equation 2–4. $$\frac{\Delta v}{\Delta t}=\frac{9.00 m/s- 0}{1.38 s}=6.52 \frac{m}{s^{2}}$$ b. $6.52 \frac{m}{s^{2}}\frac{1 km}{1000 m}(\frac{3600 s}{1 hr})^{2}=8.45 \times 10^{4} \frac{km}{h^{2}}$