Answer:
ntergalactic space takes up most of the volume of the universe, but even galaxies and star systems consist almost entirely of empty space.
Explanation:
so to be exact galixes do make up most of the volume of space because galaxies are what make up space!
Answer:
he can subtract the distance and then divide by the time it takes him
Explanation:
The average speed in the first case is 19.86 m/s and the average speed in the second case is 13.67 m/s.
The formula of average speed is
average speed = total distance / total time
In first case
total distance is 143 km which is also 143000 m
and total time is 2 hours which is also 7200 seconds
so average speed = ( 143000 / 7200 ) m/s
average speed = 19.86 m/s
In second case
total distance is 160 km which is also 160000 m
and total time is 3 hours and 15 minutes which is also 11700 seconds
so average speed = ( 160000 / 11700 ) m/s
average speed = 13.67 m/s
So to conclude with we have find the the average speed in both cases by dividing total distance by total time and in first case we have got our answer as 19.86 m/s and in second case we have got 13.67 m/s.
Learn more about speed here:
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Gpe = mgh
Gpe = 500*10*25
Gpe = 125000J
Given :
Distance travelled, d = 742 yards.
Time taken to cover 742 yards, t = 360 minutes.
To Find :
The speed in km/h.
Solution :
We know, 1 yard = 9.14 × 10⁻⁴ m.
So, 742 yards = 0.678 km.
Also, 360 minutes = 6 hours. ( 1 hour = 60 minutes )
So, speed in km/hr is given by :

Hence, this is the required solution.