V=d/t=>v=400m/44.40s=>v=9m/s
Therefore as you move around the U.S. the acceleration due to gravity (g) varies from about 9.79 to 9.81 meters per second squared. The Earth’s average is 9.80 m/s2 which is generally reported as the acceleration of gravity on Earth.
Answer:
Explanation:
<u>Kinematics equation for first Object:</u>

but:
The initial velocity is zero

it reach the water at in instant, t1, y(t)=0:


<u>Kinematics equation for the second Object:</u>
The initial velocity is zero

but:

it reach the water at in instant, t2, y(t)=0. If the second object is thrown 1s later, t2=t1-1=1.02s

The velocity is negative, because the object is thrown downwards.
Answer:
The human major features with the analogous of camera are mentioned.
Explanation:
There are the following major features of human eye which are analogue with the camera:
- Camera will have shutters which controls light entering into it, human eye consists of Diaphragm which also functions same.
- Both gives Real & inverted images.
- In camera film records image, in eye image is focused on retina and it is converted into electrical impulses.
- Pupil and iris acts as aperture of camera.