Part 1: Direction: Write the following numbers in scientific notation. 1. 88 000 000 00 m 2. 0.0015 kg 3. 820 000 Hz Part 2: Unit Conversion 1. 226 cg = g 2. 5400 mL = 3. 436 mm = m 4. 522 g mg 5. 5m = cm Part 3: Vectors 1. Is it possible to combine two equal vectors to give a zero resultant? Prove your answer. 2. Is it possible to combine two unequal vectors to give a zero resultant? Prove your answer. Part 4: Reflection Question Physical quantities that have magnitude and direction are called vectors. In life, which is more important having "magnitude" or having "direction"? (Write your insights in paragraph form composed of 5 to 10 sentences.)