Answer:
i believe the answer is D
Explanation:
Hope it works
Answer: 57.85m above the water
Explanation:
The height is 110m
the initial lenght of the cord is 35m
the spring constant is 44N/m
your mass is 77kg, so your weight is W = 77kg*9.8m/s^2 = 754.6N
So the force that the spring needs to do to cancelate this weight, is
x*44N/m = 756.6N
x = (756.6/44)m = 17.15m
So, at this point, the total elongation of the spring is:
35m + 17.15m = 52.15m
then the distance to the water is:
d = 110m - 52.15m = 57.85m
<h2>Acceleration due to gravity in moon is 1.5 m/s²</h2>
Explanation:
We have equation of motion s = ut + 0.5 at²
Here the ball travels 3 m less distance in fifth second compared to third second.
That is
s₃ = s₅ + 3
Now we have
Distance traveled in third second, s₃ = u x 3 - 0.5 x g x 3² - u x 2 - 0.5 x g x 2²
s₃ = u - 2.5 g
Also
Distance traveled in fifth second, s₅ = u x 5 - 0.5 x g x 5² - u x 4 - 0.5 x g x 4²
s₅ = u - 4.5 g
That is
u - 2.5 g = u - 4.5 g + 3
2 g = 3
g = 1.5 m/s²
Acceleration due to gravity in moon = 1.5 m/s²