. A minibus drives for 1/6 hours with a constant speed of 48 mph and then for another 2 hours 5 minutes with a constant speed of 36 mph. What distance did it go?
Answers
Step-by-step explanation:
The term speed means the distance you are going per unit time and helps us to compare the ‘fastness’ of objects in a certain time. And constant speed indicates you are always moving the same distance in certain period of time.
Constant speed of 40mph or 40 miles per hour means you are always going 40 miles distance in an hour or if measured in minutes, you are going 40/60 or 2/3 miles per minute.
So, your speed ia 40mph or 2/3 miles per minute. Ot we can say… in 1 minute you are going 2/3 mile. So to calculate the distance you would go in 45 minutes just needs multiplication. That is,
Distance = distance travelled per unit time (speed) × time period in which the moving object has travelled. (This formula is only valid for objects moving in constant speed)
So , the distance= 2/3 miles per minute × 45 minutes = 30 miles.
Calculations will be quite easy as you can do it just in your phone , but what you need is to learn the reason,the physics, behind your calculation… because physics is everything !