Concept explainers
Calculate the acceleration of a bus that goes from 10 km/h to a speed of 50 km/h in 10 seconds.
Theacceleration of a bus.
Answer to Problem 33A
The acceleration of the bus is
Explanation of Solution
Given:
A bus changes its speed from 10 km/hr to 50 km/hr in 10 s.
Formula used:
The final speed, v of an object can be expressed in terms of its initial speed, acceleration, a and time of travel t as,
For a given change in speed and time, the acceleration can be calculated as,
Calculation:
Here, initial speed of the bus is 10 km/hr and final speed is 50 km/hr and the time is 10 s. Thus, the acceleration of the bus is given by,
Conclusion :
The acceleration of the bus for the given change in speed and time is
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Conceptual Physics: The High School Physics Program
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