Answer:
28 metres
Explanation:
when the bag is about to hit the ground
potential energy = kinetic energy

where m = mass
g = acceleration due to gravity
v = speed
when you simplify the above equation and make v subject of the formular we have

where g = 9.8m/s
h = 40

Answer:
r = 2.93 m
Explanation:
mass of the person = 64.8 kg
speed v = 3.44 m/s
Force F = 261 N
using formula

the radius of the chamber is given by

r = 2.93 m
so, the radius of a chamber is equal to 2.93 m
The answer is obvious. " Reverses "
1 atm = 760 mm Hg
2,5 atm = 2,5 * 760 = 1900 mm Hg
b