What is the mean of the data set 2ml, 4ml, 6ml, 8ml, 8ml, 8ml
1 answer:
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The car has an initial velocity of 23 m/s and a final velocity
of 0 m/s. Recall that for constant acceleration,
The car stops in 7 s, so the acceleration is
Answer:
+7.0 m/s
Explanation:
Let's take rightward as positive direction.
So in this problem we have:
a = -2.5 m/s^2 acceleration due to the wind (negative because it is leftward)
t = 4 s time interval
v = -3.0 m/s is the final velocity (negative because it is leftward)
We can use the following equation:
v = u + at
Where u is the initial velocity
We want to find u, so if we rearrange the equation we find:
and the positive sign means the initial direction was rightward.