Answer:
The speed of motorboat in still water = 42.67 km / h
Explanation:
Let speed of motorboat = u
speed of current = v
Then upstream speed = u - v
Negative sign is due to that the current and motorboat directions are opposite.
And downstream speed = u + v
Distance traveled by motorboat in upstream = 96 km
Time taken = 3 hours
Then upstream speed (u - v) =
= 32 km / h ---------------- (1)
Distance traveled by motorboat in downstream = 160 km
Time taken = 3 hours
Downstream speed (u - v) =
km / h = 53.34 km / h -------------------------- (2)
By adding equations (1) & (2), we get
⇒ 2 u = 32 + 53.34
⇒ 2 u = 85.34
⇒ u = ![\frac{85.34}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B85.34%7D%7B2%7D)
⇒ u = 42.67 km / h
Thus the speed of motorboat in still water = 42.67 km / h
R is the distance from the center of the Earth to the object in orbit. So, the object isfalling<span> towards the Earth, but just keeps missing the Earth. This is the real reason astronauts float inside the International </span>Space Station<span> (</span>ISS) - they, and the vehicle are in free-fall<span>.
(I DID NOT WRITE THIS)</span>
Answer:
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Speed = Distance/time
Speed = 800/40
Speed = 20 metre per second
Answer:
It would be 2.2 if you have to round the five to the one but if your not rounding the number, it'd be 2.1.
Explanation: