Which of the following is an example of an observation? Multiple Choice Gases expand as their temperature increases because the gas molecules are moving more rapidly. Paraffin wax begins to melt at 57°C. Three samples of wax are heated to 75°C. The force acting on an object is equal to its mass times its acceleration. Will all waxes melt at the same temperature?

The answer is b hope this

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.