2m/s
Explanation:
Given parameters:
Distance traveled = 60m
time taken = 30seconds
Unknown:
Speed of skateboarder = ?
Solution:
Speed is the rate of change of distance with time taken. It is a scalar quantity that only revers magnitude;
Speed = 
Speed =
= 2m/s
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Answer:
92 elemns in mendeleef oisv
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Explanation:
<span>The star's main fuel during its lifetime is hydrogen. It is said that a star is composed of 97% hydrogen and 3% helium. Once the hydrogen of a star is gone, the star becomes old because it burns hydrogen during its lifetime.</span>
Answer:
A divide is the elevated boundary separating areas that are drained by different river systems
Explanation:
Answer:
After it finishes speeding up, the car goes 72 [m]
Explanation:
To solve this problem we must first understand the graphics. It is clear that in the last 6 seconds, that is, from the fourth to the tenth second, the car moves at a constant speed.
Therefore in this time interval, the car moves at a constant speed.
With the following equation of kinematics, we can calculate the distance traveled.

where:
x = final point [m]
x₀ = initial point [m]
v = constant velocity = 12 [m/s]
t = time = 6 [s]
Now replacing we have:
![x-x_{o} = 12*6\\x-x_{o}=72 [m]](https://tex.z-dn.net/?f=x-x_%7Bo%7D%20%3D%2012%2A6%5C%5Cx-x_%7Bo%7D%3D72%20%5Bm%5D)