Answer:
The correct option is C: the normal force of gravity on each foot is equal to 1/2 the force of gravity on the person.
Explanation:
Since the feet are equidistant from each other, the total torque is zero:
And the total forces acting on the feet are also equal to zero:

Hence, the normal force on the feet are:
Where:
W: is the weight force
N₁: is the normal force of foot 1
N₂: is the normal force of foot 2
Since the normal force of each foot is the same, we have that N₁ = N₂ so:
(1)
From the result of equation (1), we have that the normal force on each foot is equal to 1/2 the force of gravity on the person.
Therefore, the correct option is C: the normal force on each foot is equal to 1/2 the force of gravity on the person.
I hope it helps you!
Answer:
Explanation:
Voltage, V = 1.58 V
Power, P = 1 W
1 A.h
Charge, Q = 1 A.h = 1 x 3600 A.s = 3600 C
Power x time = Voltage x charge
1 x t = 1.58 x 3600
t = 1.58 x 3600 second
t = 1.58 hours
Gravitational field strength (GFS) on earth =10 N/kg
Weight = GFS x mass
W = 10 x 7
W = 70N
70N = 15.74 pounds
Answer:
its velocity is 51, or 51.42 to be exact it would be: 51.4285714286
Impulse describes the change of momentum. Since we don't know the momentum of the soccer ball before the hit, this question is hard to answer. If you assume the momentum of the ball before the hit was p = 0, then the change in momentum is just Δp = Impulse = mv.