Answer:
option A would be the right choice
Answer:
539N
Explanation:
Parameters given:
Mass of person = 66kg
Mass of parachute = 4kg
Downward acceleration = 2.1 m/s²
The total force acting on the system is the sum of the force of gravity and the force due to air acting opposite gravity:
F = mg - F(a)
Where g = acceleration due to gravity
Force is given as:
F = ma
=> ma = mg - F(a)
=> F(a) = mg - ma
F(a) = m(g - a)
m is the mass of the entire sustem
m = 66 + 4 = 70kg
=> F(a) = 70(9.8 - 2.1)
F(a) = 70 * 7.7
F(a) = 539N
The upward force on the open parachute from the air is 539N
Answer: 20,734.69 N/m
Explanation:
The elastic potential energy (ELPE) of the rubber band is given by
where
k is the spring constant
x = 0.035 m is the stretching of the rubber band
E = 12.7 J is the ELPE of the rubber band
Substituting the numbers and re-arranging the equation, we find
1
The flow of electrons from negative to positive.
3
Materials that can easily carry electricity from place to place.
4
Materials that do conduct electricity, just not as well as conductors.
5
Materials that stop the flow of electricity.
2
An object that slows down the flow of electric current but still allows some electric current to move, resulting in some of the energy being converted to heat (thermal energy) or light energy in the process.
I need to see the picture. It is either gravity or air resistance (friction)
