How long does it take to drive 120 miles at 40 mph?
Closed 7 years ago. A person drove 120 miles at 40 mph, then drove back the same 120 miles at 60 mph. What was their average speed? 240 mi 50 mph = 4.8 hours.
What’s the average speed for a 60 mile trip?
A classic puzzle related to this: A driver is supposed to complete a 60 mile trip at an average speed of 60 mph. He drives the first half of the distance at 30 mph. How fast must he drive the second half, in order to meet the 60 mph goal? – coneslayer Nov 12 ’10 at 19:37
How to calculate the average speed for 240 miles?
For 240 miles total, 240miles*1.25minutes/mile = 300 minutes = 5 hours. This method is called finding the “harmonic mean” of the speeds. In order to calculate the average speed you have to weight the time of the different parts of the trip, and not with the distance covered in the same parts!
What is the average speed of a car?
Update the question so it’s on-topic for Physics Stack Exchange. Closed 7 years ago. A person drove 120 miles at 40 mph, then drove back the same 120 miles at 60 mph. What was their average speed?
How many miles was it when I drove 50 mph for 90 minutes?
“How many miles was the time?” does not make sense. 75 miles 50 MPH means you traveled 50 miles in 1 hour & since if you drove 50 MPH for a half an hour or 30 minutes would be 25 miles so you drove for an hour and a half at 50 miles per hour that would be 75 miles in one & a half hours or 90 min
How many miles per second can a vehicle travel at 30 mph?
A: Maybe a second. Q: Then you have to close in and underscore how the defendant is contradicting himself/herself; the court has taken judicial notice of how far vehicles can travel over time at given speeds. You would agree that at 30 mph a vehicle is traveling at 2 miles per minute.
How to calculate the speed of a car at sixty miles an hour?
So if you want to calculate the speed of a car at sixty miles an hour, the math is (60 x 5280) ÷ (60 x 60) = 88 feet per second. So this formula works for any “how far do you travel?”
How long does a thirty second drive take?
In one study, participants who viewed a thirty second event gave an average estimated duration of 150 seconds, 500% longer than it actually took. You can also figure this out by just asking someone to estimate how many feet a vehicle travels in one second while driving 65 mph.