Questions Topic: Vector Analysis 1. What is the difference between speed and velocity? 2. How does a vector differ from a scalar? 31 / 102 3. Is it possible to get a zero resultant of two or more vectors? If so, what does it indicate? 4. Why is knowledge on vector important in Physics? 5. Draw two vectors of different magnitude in (a) the same direction, (b) opposite direction.Exercise Problem Topic: Vector Analysis: Pythagorean Theorem 1. The hypotenuse of a right triangle is 28 cm long, and the length of one of the short sides is 23 cm. Find the length of the other side. 2. A man drives 5 mi. to the north and then 10 mi. to the east. What are the magnitude and direction of his displacement from the starting point? 3. A boat is headed north at a speed of 8 mi./h. A strong wind is blowing whose pressure on the boats superstructure causes it to move sideways to the west at a speed of 2 mi./h. What is the boat's velocity relative to the earth' surface?Exercise Problem Topic: Vector Analysis: 1. Find the magnitude and direction of the resultant force produced by a vertically upward force of 40 lb. and a horizontal force of 30 lb. 2. Find the vertical and horizontal components of a 50-lb force that is directed 50" above the horizontal. 3. A boat moving at 10 mi/hr is crossing a river in which the current is flowing at 2.5 mi./hr. In what direction should the boat head if it is to reach a point on the other side of the river directly opposite its starting point