True or false 1. The unit-factor method is used as a validity tool in deriving equations. 2. Kinetic energy is dependent on the mass and velocity of an object. 3. Acceleration is speed with direction.

Q23. The width of a man's hand was used as a common unit of length several hundred years ago. What are the advantages and disadvantages of using such a unit? Explain. E1. Suppose that a pancake recipe designed to feed three people calls for 600 mL of flour. How many milliliters of flour would you use if you wanted to extend the recipe to feed five people? E7. A crate has a mass of 9.40 kg (kilograms). What is this mass in grams? In milligrams?

Use the dimensional analysis to show if the following equations below are dimensionally consistent: a. v = at 2 ( where v is the velocity, a the acceleration and t the time) b. v = PE/d ( where v is the velocity, PE is the potential energy and d is the distance )

Option 2 please. Disregard option 1.  Please only use equations listed on equation sheet.

4. The error in measuring distance of a moving object is 3.44 x 10-12 m.    If the mass of the object 115 lb, calculate the error in measuring speed.   a.3.01 x 10^-19 Jb.1.20x10^-12 m/sc.5.84 x 10^-25 m/sd.3.12x 10 -10 m/s

A boat takes 3.70 hours to travel 45.0 km down a river, then 6.70 hours to return. You may want to review (Pages 91 - 92). Part A How fast is the river flowing? Express your answer with the appropriate units. μA Value Submit Units Request Answer ?

The speed of sound is 1100 ft/sec at sea level.   a. Express the speed of sound in mi/hr.  b. Change the speed of sound to mi/year. Let 365 days=1 year.

2. Classify the following statements as either True or False : c) Races of different students in a class is quantitative data. True False

10) The speed limit on some interstate highways is roughly 120 km/h. a) What is that speed in meters per second?  b) How many miles per hour is this?

8.A man is driving at a speed of 90km/h for 2 hours and slowed down to 82km/h for 1.5 hours. What is the total distance in km A) 303 km b) 322 km c) 345 km d) 367 km