Answer:

Explanation:
To calculate the average velocity we must know the distance traveled and do
. The distance traveled is
, so we need to calculate the acceleration, which, since it's uniform, is
. Putting all together:

<span>MVEMJSUNP
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Hope it helps!!!
;)
False, there are also artificial satellites.
The object keps going cause of wind friction
Oscillation is a type of periodic motion which repeats itself to and from about a point which is called mean position. The period of a Pendulum can be described as a ratio between the length and gravity as,

Here,
L = length
g = Gravity
If we rearrange to find the length we have that,

Our period is 2s and the gravity is 9.8m/s^2, then,


The simple required length of the pendulum must be 0.9929m