Answer:
a) F = 1.26 10⁵ N, b) F = 2.44 10³ N, c) F_net = 1.82 10³ N directed vertically upwards
Explanation:
For this exercise we must use the relationship between momentum and momentum
I = Δp
F t = p_f -p₀
a) It asks to find the force
as the man stops the final velocity is zero
F = 0 - p₀ / t
the speed is directed downwards which is why it is negative, therefore the result is positive
F = m v₀ / t
F = 63.5 7.89 / 3.99 10⁻³
F = 1.26 10⁵ N
b) in this case flex the knees giving a time of t = 0.205 s
F = 63.5 7.89 / 0.205
F = 2.44 10³ N
c) The net force is
F_net = Sum F
F_net = F - W
F_net = F - mg
let's calculate
F_net = 2.44 10³ - 63.5 9.8
F_net = 1.82 10³ N
since it is positive it is directed vertically upwards
20,000 because I did the quiz and got it right txt me if you need help
The answer is d.acid rain and air pollution
<span>The traders find it helpful to tow the cedar logs instead of storing them inside the ship to help lessen the load of cargo on the ship. Logs are heavy even for just a log and so storing them inside the ship would one, increase the weight of the ship which will let them sink if they do not manage its carrying capacity of weight, two, it minimizes the area of the ship to be used instead of placing other items that would maximize their transport and three, if anything else goes wrong, at least they have another life support that they can easily get if ever they are drowned. These goes back to the late 1500's where transportation of everything including people and materials only uses ships or boats.</span>
D. All of these, they’re all part of scientific inquiry