Answer:
To identify the problem
Explanation:
The first step in the problem-solving process is to identify the problem. It is not as simple as it sounds as different people may have different ideas of what the "problem" is. Clearly stating the problem and getting everyone involved to agree is an important first step.
Answer:
10 kg
Explanation:
p=ma
25=2.5m
m=25/2.5
m=10 kg
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Answer:Remains same
Explanation:
Given
It is given that the depth is constant and we are only increasing the height of object submerged in the water
thus Force due to Pressure remains same as this force depends upon the depth of object with respect to free surface of Fluid.
Pressure at a depth h with density
of fluid is given by

and 
So your finding acceleration first which is 30m/s divides by 6 seconds equals 5m/s^s and then multiply that by 1,400 kg and you have net force which is 7,000N