Concept explainers
(a)
The components of the acceleration of the fish.
(a)
Answer to Problem 9P
The horizontal component of acceleration for the fish is
Explanation of Solution
As per given condition in the problem, this case is related to constant acceleration
According to constant acceleration, motion in two dimensions can be modeled as two independent motions in each of the two perpendicular directions associated with the
At
At
Write the general expression for acceleration as.
Here,
Write the expression for acceleration in
Here,
Write the expression for acceleration in
Here,
Write the final expression for acceleration in
Here,
Conclusion:
Substitute
Substitute
Thus, the horizontal component of acceleration for the fish is
(b)
The direction of the acceleration with respect to unit vector.
(b)
Answer to Problem 9P
The direction of the net acceleration is
Explanation of Solution
Write the expression for direction of the acceleration of the fish as.
Here
Conclusion:
Substitute
The direction of the net acceleration is
Thus, the direction of the net acceleration from the positive
(c)
The direction and the position of the fish at constant acceleration in
(c)
Answer to Problem 9P
The
Explanation of Solution
The position vector
Write the expression for final position vector for horizontal component as.
Here,
Write the expression for final position vector as.
Here,
Write the expression for final position vector as.
Here,
Write the expression for final velocity at
Here,
Write the expression for direction of the velocity components at
Conclusion:
Substitute
Substitute
Thus, the position vector for the fish at
Substitute
Substitute
Substitute
Thus, the direction of the velocity component is
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Chapter 4 Solutions
Physics For Scientists And Engineers With Modern Physics, 9th Edition, The Ohio State University
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