Concept explainers
A 20.0-kg mass moving at a speed of 3.0 m/s is stopped by a constant force of 15.0 N. Show that the stopping time required is 4.0 s.
To Show: The required stopping time period is 4.0s.
Explanation of Solution
Given info:
Mass,
Initial speed,
Final speed,
Constant force,
Formula used:
According to the definition of impulses, impulse is equal to the change in momentum, which is given by:
Impulse = change in momentum
And, the time is calculated as,
Calculation:
Substitute the values and solve:
Conclusion:
Thus, the stopping time period is 4.0 s.
Chapter 8 Solutions
Conceptual Physics: The High School Physics Program
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