Feather is dropped from 13 m high after it has fallen 3 m what is its acceleration

Explanation:

The constant acceleration of any object, neglecting air resistance and friction, is always -9.8. Proof:

which is the position of this feather before it is dropped. The first derivative of position is velocity, so the velocity function for the feather is:

. We could find the velocity that the feather is experiencing at 3 seconds, but that is not what we are being asked. What we are being asked is the acceleration of the feather at 3 seconds. So we find the acceleration function of the feather:

a(t) = -9.8

It turns out that the time doesn't matter to acceleration due to gravity because feathers and elephants all fall under the same pull.

show the wavelengths of a wave. show the crests of a wave.

0 = 0.40 / 0 = 0

= 0.20 = 9.80 ⁄2 =?

=0 , = = 0.20 =0.50 0 0.40 ⁄

=0−122 =0−12(9.80 ⁄2)(0.50)2 =1.2