Earth's layers formed as result of differentiation. During differentiation, different zones of elements form layers and today we
2 answers:
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Answer:
Part(a): The average acceleration is during the first 6s.
Part(b): The average acceleration from 6s to 8s is zero.
Explanation:
Part(a):
The average acceleration is defined as the rate at which velocity is changing with respect to time. So if '', '
' and '
' represents the initial velocity, final velocity, and average acceleration of a particle, then mathematically
where '' is the time taken by the particle to achieve the velocity '
' starting from initial velocity '
'
Given in the problem, .
So the average acceleration() during the first 6 s will be
Part(b):
During the time between 6 s to 8 s, as mentioned in the problem, the sprinter maintains the constant velocity. So the average acceleration during this time interval will be zero.