Answer:
c-) both objects will reach the bottom at the same instant.
(b) decrease.
Explanation:
Although the feather is lighter than the coin, the tube where the experiment is performed is evacuated. Therefore there is no air that prevents the feather from falling freely with the same acceleration and speed as the coin.
In fact in the equations of kinematics proposed by Newton, the mass of the bodies is not taken into account, as we can see in the following equation:
where:
Vf = final velocity [m/s]
Vi = initial velocity [m/s]
g = gravity acceleration [m/s^2]
t = time [s]
Therefore the answer is C.
Gravitational pull is a function of height, as the height of the body increases, the force of gravity decreases.
Answer:
The estimated time of arrival at the destination Airport will be 1730 PST.
Explanation:
Given:
Time at which flight departs from airport = 1615 MST
Duration of flight the reach destination airport = 2 hour 15 minute.
We need to find the estimated time of arrival at the destination airport.
Solution:
Now Given:
The Destination Airport is located in Pacific standard time zone.
Now first we will find the Arrival of flight at destination airport in MST.
Now we can say that;
Arrival of flight at destination airport will be equal to sum of Time at which flight departs from airport and Duration of flight the reach destination airport.
Arrival of flight at destination airport in MST =
Now We know that;
Mountain standard time is 1 hour ahead then Pacific Standard time.
Now Arrival of flight at destination airport in MST = 1830 MST
Arrival of flight at destination airport in PST = 1730 PST.
Hence The estimated time of arrival at the destination Airport will be 1730 PST.
To calculate the speed of the water leaving we use the formula,
Here h is the height of the water above the hole and g is the acceleration due to gravity.
Given,
Substituting the given value in above formula we get
Thus, water flow from a hole at the speed is 10.7 m/s
Answer:
10 years
Explanation:
Well,when u travel at the speed of light,u shrink the distance u need to travel. For u 10 years would be just seconds but in earth years..a decade has passed. for example..Ur smaller bro would be older than u when u come back
The acceleration due to gravity falls off as the inverse of the square of the distance from the center of the Earth. Thus the distance of interest is
1/(d/R)^2 = 0.785/9.8
d = R·√(9.8/0.785) ≈ R·3.53328
or R·2.53328 above the surface of the earth.
Wikipedia says the radius of the earth is 6371 km, so your distance is
(6371 km)·2.53328 ≈ 16,140 km