Answer:
Rowan's feet appears at a distance of 0.451 m under water
Solution:
As per the question:
Actual depth in water, d = 0.60 m
Normal distance of her feet from her eyes, D = 1.60 m
Now,
We know that refractive index of water, 
Thus
To calculate the apparent height of her feet:
Answer:
3 m/s
Explanation:
Given:
a = 2 m/s²
Δx = 10 m
v = 7 m/s
Find: v₀
v² = v₀² + 2a (x − x₀)
(7 m/s)² = v₀² + 2 (2 m/s²) (10 m)
v₀ = 3 m/s
You can compare the velocity of the car, 60 mph, with the velocity that a mass would acquire when falls from certain height.
First, convert 60 mph to m/s:
60 miles/h * 1.60 km/mile * 1000 m/km * 1h/3600s = 26.67 m/s
Second, calculate from what height a body in free fall reachs 26.67 m/s velocity when hits the floor.
free fall => Vf^2 = 2g*H => H = Vf^2 / (2g)
H = (26.67m/s)^2 / (2*9.8 m/s) = 36.2 m
If you consider that the height between the floors of a building is approximately 3.6 m, you get 36.2 m / 3.6 m/floor = 10 floors.
Then, you conclude that the force of impact is the same as driving you vehicle off a 10 story building.
Answer:
absorption and insolation.
Explanation:
