Concept explainers
These are drawings of Same-size balls of different masses thrown straight downward. The speeds shown occur immediately after leaving the thrower’s hand. Ignore air resistance. Rank their accelerations from greatest to least. Or are the accelerations the same for each?
To rank: The acceleration from greatest to least. Also, state whether the acceleration is same for each.
Explanation of Solution
Introduction:
Every freely falling objects falls under the influence of gravitational force exerted by an Earth. Acceleration increases the velocity of an object during fall.
Consider the figure shown below.
The Earth exerts a gravitational force on every objects. If air resistance is neglected, then every ball falls freely. When objects is falling freely its acceleration is constant during fall of its motion. Its value is 9.8 m/s2. So, rank will be,
Conclusion:
Therefore, acceleration is same for every ball.
Chapter 4 Solutions
Conceptual Physics: The High School Physics Program
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