He distance from city a to city b is about 175175 mi by ferry. it takes 66 hr less to travel by the same ferry from city b to city c, a distance of about 7070 mi. what is the average rate of the fer

The average speed will be 2.54 Km/h

Explanation:

Given that

A to B

Distance = 175175 m=175.175 KM

B to C

Distance = 7070 m=7.07 Km

Lets take time taken from B to C is t then A to B will be t+66

We know that

Distance = velocity x time

175.175 =  V x (t+66)              1

7.070 = V x t                      2

From equation 1 and 2

t=2.77 hr

Now by putting the values in equation 2

7.07 = V x 2.77

V = 2.54 Km/h

So the average speed will be 2.54 Km/h

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the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19