Final answer:
The statement is true as it describes the basic formula for calculating travel time by dividing distance by speed. The reasonableness of the answer should be checked by ensuring the units are correctly converted and the speeds are within realistic range for an airplane.
Step-by-step explanation:
The statement 'To figure out how long an airplane will take to reach Beijing, divide the distance to Beijing by the airplane's speed' makes sense and is clearly true as it represents a basic travel time calculation used in mathematics and physics.
To calculate the travel time (T), you divide the distance (D) to the destination by the speed (V) at which you're traveling. This is expressed in the formula T = D/V. For example, if you have a distance of 3000 kilometers to travel and the speed of the airplane is 600 kilometers per hour, you would calculate the time by dividing 3000 km by 600 km/h, which equals 5 hours.
Next, you should check if the answer is reasonable. If you convert units from km to meters or hours to seconds where necessary, and you make sure the speed is not unrealistically high or low for an airplane, your answer is likely reasonable.
When dealing with non-relativistic speeds (much less than the speed of light), the time and distance would be measured as the same by all observers, which in real-world scenarios is generally the case.