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
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
It's 70 kilometers per hour west.
140 miles
180 miles
805 miles divided by 7 hours is 115 miles per hour.
109mph.
It's 70 mph west
Divide 496 by 8. That will give you the speed in miles per hour.
Positive acceleration.