Average Speed = Distance Traveled / Time Taken
Velocity = Speed and direction.
Speed = 140 mi/ 2hrs = (140/2) mi/hr = 70 mi/hr.
Direction = West
Velocity = 70 mi/hr west
39 miles
There are 420 miles between the two cities.
A train that travels at 40 kilometers per hour (kph) for 10 hours goes 400 kilometers. If the train goes 50 kph for 8 hours, it also travels the same 400 kilometers. The difference in speeds is 10 kph, and the difference in times is 2 hours.
'A' is slower. 'B' is faster. 'A' covers 220 miles, while 'B' covers 310 miles. 'B' gained 90 miles on 'A'. Since 'B' gains 18 miles on 'A' in each hour, it took (90/18) = 5 hours for 'B' to gain 90 miles on 'A', so both stated distances were covered in 5 hours. Speed of 'A' = 220/5 = 44 Speed of 'B' = A+18 = 310/5 = 62
two and a half hours, 200/80 = 2.5
The velocity of the train can be calculated by dividing the distance traveled by the time taken. In this case, the train travels 100 miles north in 2 hours, so the velocity is 100 miles / 2 hours = 50 miles per hour. Therefore, the train's velocity is 50 miles per hour to the north.
The velocity of the train can be calculated by dividing the distance traveled by the time taken. In this case, the train travels 140 kilometers west in 2 hours. Therefore, the velocity is 140 km / 2 hours = 70 km/h west.
1.4:1 in favor of the train.
39 miles
131.82 miles per hour.
1600 / 80 = 20 hours by train 1600 / 200 = 8 hours by plane it will take 20 - 8 = 12 hours more by train
140 miles
It's 70 kilometers per hour west.
180 miles
805 miles divided by 7 hours is 115 miles per hour.
109mph.
It's 70 mph west