Answer:
Explanation:
Momentum conservation

Kinetic energy conservation

Solve the system
Answer:
d. Imaginary point through which the resultant force of gravity acts on an object
Explanation:
Gravity acting on all particle points of the object, no matter how small they are. As a combination, the center of gravity would denote a single point which substitutes for all the gravity forces on the object.
Answer:
0.17214 m
Explanation:
P = Pressure difference between inside and outside the chest cavity = 0.05 atm
= Density of fresh water = 1000 kg/m³
= Density of water in the Dead Sea= 1500 kg/m³
h = Height
In fresh water

In dead sea

The difference in height is 0.51643-0.34429 = 0.17214 m
A. in the Same Direction as the Force.