Answer:
Explanation:
The potential energy of an object is given by .
Recall that the weight of an object is equal to the force of gravity on the object. From this, we can set up the following equation and solve for the mass of the object:
Now we can plug in values to and solve:
.
I think B is the most correct, because logically it's harder to bend a stiffer spring than it is to bend a softer one. Also, I don't think length comes into play. So B.
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
I think its [B]
Personally i would say [B] only because If you are looking beyond the car in front of you..... then what if the car in front of you throws on breaks... you would hit them in the butt because you weren't paying attention to the car.
And majority of the time if your looking in the lanes beside you then you are most likely trying to get in that lane.
The distance is the total distance she walked which is 16 meters adding the 6 meters to the corner and 10 meters to her friend's apartment. Her displacement is the distance from her original starting point so you set up a triangle with side lengths of 6 and 10 and solve for the hypotenuse which gives you a displacement of 11.66 meters.