Concept explainers
ToDetermine:
The speed when it strikes the ground below.
Answer to Problem 54P
Solution:
Explanation of Solution
Given:
Angle of projection
Initial height of projectile
Initial speed of projectile
Final height of projectile
Reference level for potential energy is ground surface.
Concept used:
Only gravitational force (conservative force) is acting, so apply
Conservation of mechanical energy.
Calculation:
Initial K.E
Initial P.E
Final K.E
Final P.E
Conclusion:
During motion of projection only gravitational force is acting, which is conservative force, so total mechanical energy is conserved during motion of projectile.Speed of ball just before it strikes the ground
Chapter 6 Solutions
Physics: Principles with Applications
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