Answer:
C. An inital volocity that is faster than the final volocity
Explanation:
.
this process is called parellelogram method of resolving vectors.
Answer:
A) the pressure could crush the submarine
Explanation:
- The submarines are mainly used for defense purposes.
- In world war 1 and 2 the submarines played a vital role in the war.
- The submarines work according to the principle of buoyancy.
- According to this principle, when seawater is filled inside the tank in a required amount, the submarines sink.
- When the seawater is expelled, the submarine rises to above the sea.
- Most of the time, it dives deep into the sea, the hydrostatic pressure should be taken into account.
- If the hydrostatic pressure is not considered, the pressure could crush the submarine.
The force on the layer will be equivalent to the weight of water on it. This is given by:
F = mg; m is the mass of water and g is the acceleration due to gravity.
I believe the answer is C
