Time and distance
3 hours and 36 minutes.
no. technically and scientifically speaking, there is NO such thing as EXACT distance, time, or measurement (height, length, width, weight, speed).
Speeding is a factor in all fatal accidents for multiple reasons. The main being the greater the speed, the greater force involved. More force increases the chance of great bodily harm or death in a collision. A second factor that speed changes is breaking distance. The faster a vehicle is moving, the longer it takes to stop. A vehicle traveling 30 MPH has an approximate stopping distance of 109 feet, 60 MPH 304 FT, and 90 MPH 584 FT.
If the refractive index is k then the speed of light is c/k metres per second where c is the speed of light in vacuum (approx 299,792,458 m/s).
If you double your speed, your stopping distance will quadruple due to the relationship between speed and stopping distance. It's important to remember that increasing speed significantly impacts the time it takes to bring a vehicle to a complete stop.
Two variables are said to be in direct proportion if, when you increase one by some multiple, the other also increases by that same multiple. Alternatively, both decrease by the same proportion. Two variables are in indirect (or inverse) proportion if an increase in one of them is associated with a decrease in the other, and conversely. The proportional change in both is the same. For example, if I change the speed at which I am driving, then the distance that I can cover in a fixed amount of time will change in the same proportion. Double my speed then double the distance, quadruple speed and quadruple distance, halve the speed and halve the distance. So speed and distance are directly proportional. Now think of speed and the time taken to do a fixed distance. Double my speed and halve the time. Halve the speed then double the time. So time taken is inversely proportional to speed.
Speed = Distance/TimeTime = Distance/SpeedDistance = Speed*TimeSpeed = Distance/TimeTime = Distance/SpeedDistance = Speed*TimeSpeed = Distance/TimeTime = Distance/SpeedDistance = Speed*TimeSpeed = Distance/TimeTime = Distance/SpeedDistance = Speed*Time
it would increase your speed in direct proportion. If time is halved, for example, speed would double
Speed= distance / time distance = speed x time time = distance / speed
speed = distance / time so distance / speed = time
speed over distance or speed/Distance.
21.1 mi. is not a speed, it is a distance.21.1 mi. is not a speed, it is a distance.21.1 mi. is not a speed, it is a distance.21.1 mi. is not a speed, it is a distance.
Speed = time divided by distance.
time=distance x speed. to find speed, it is speed=distance/time distance=speed x time.
To calculate speed you need to know the distance travelled and the time taken to travel that distance such that Speed = Distance / Time. The result of this calculation gives the average speed without taking into account any periods of acceleration or deceleration. We can implement this using just one function: long double speed (const long double distance, const long double duration) { return distance / time; } Note that we use the term "duration" rather than "time" purely to aid readability; "time" implies a specific moment in time rather than a duration. We use a long double to cater for the widest possible range of values. However, if we want to ensure the most efficient calculation over a wide variety of numeric types, we would use a function template instead: template<typename T> T speed (const T& distance, const T& duration) { return distance / duration; } The distance and duration variables will typically be taken from input: int main () { double distance, duration; std::cout << "Enter the distance and duration: " std::cin >> distance >> duration; std::cout << "Speed = " << speed (distance, duration) << '\n'; } Note that the actual units of measurement are not important to the function because speed is denoted by the given distance per given time unit. That is, if we travel 100 meters in 10 seconds, then the speed is 10 meters per second, whereas if we travel 100 miles in 10 minutes, then we are travelling at 10 miles per minute. Thus when distance is 100 and duration is 10, the speed is 10. It is up to the caller to convert these units to something more meaningful: int main () { double distance, duration; std::cout << "Enter the distance in kilometers: "; std::cin >> distance; std::cout << "Enter the duration in hours: "; std::cin >> duration; std::cout << "Speed = " << speed (distance, duration) << " kilometers per hour\n"; } Note that the examples do not perform any error-checking upon the input. In production code when entering numbers from input you will typically input strings instead. You will then test the strings are valid before typecasting the strings to a numeric format such as double.
Speed= distance/time Distance= speed x time Time= distance/speed