a) Average velocity: 2.8 m/s
b) Average velocity: 5.2 m/s
c) Average velocity: 7.6 m/s
Explanation:
a)
The car's position over time t can be described by
where
To find the average velocity, we divide the displacement by the elapsed time:
At time t = 0, the position is:
At time t = 2.00 s, the position is:
This leads us to the displacement of
The duration for this interval is
Therefore, the average velocity during this period is
b)
At time t = 0, the position is:
At time t = 4.00 s, the position is:
Thus, the displacement is
The time interval is
This yields an average velocity of
c)
The position at t = 2 s is:
And at t = 4 s it is:
This gives us a displacement of
While the time interval is
So the resulting average velocity is
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