75mph
50km/hr
A.167 km/h
Divide 496 by 8. That will give you the speed in miles per hour.
50km/h (30mph)
A frog can swim at 50km an hour or 31mph
Write a formula to calculate the distance between the two, as a function of time. Use the Law of Pythagoras. Then take the derivative of this distance, and evaluate at the particular time t = 0.75 (hours).
55 mph (!)
as fast as your going
depends on how fast you are going
80 mph
110 km/h !