Concept explainers
The mass and speed of three vehicles are shown below.
a. Rank the vehicles by momentum from greatest to least.
b. Rank the vehicles by kinetic energy from greatest to least.
(a)
To rank: The vehicles on the basis of their momentum from greatest to least.
Answer to Problem 26A
The rank of the vehicles by momentum from greatest to least is
Explanation of Solution
Given:
The given diagram representing the mass and speed of three vehicles is shown below.
Formula used:
The expression for momentum is,
Here,
Calculation:
The momentum for case A is,
The momentum for case B is,
Find the momentum for case C as follows:
By comparing the values of the vehicles by momentum is
Conclusion:
Thus, the rank of the vehicles by momentum from greatest to least is
(b)
To rank: The vehicles on the basis of their kinetic energy from greatest to least.
Answer to Problem 26A
The rank of the vehicles by kinetic energy from greatest to least is
Explanation of Solution
Given:
The given diagram representing the mass and speed of three vehicles is shown below.
Formula used.
The expression for kinetic energy is,
Here,
Calculation:
The kinetic energy for case A is,
The kinetic energy for case B is,
The kinetic energy for case C is,
By comparing the values of the vehicles by kinetic energy is
Conclusion:
Thus, the rank of the vehicles by kinetic energy from greatest to least is
Chapter 9 Solutions
Conceptual Physics: The High School Physics Program
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