What Formula Determines Average Velocity During Impact?

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SUMMARY

The average velocity during impact for a falling object can be calculated using the formula vave = (v1 + v0)/2, where v1 is the final velocity and v0 is the initial velocity. In the case discussed, the boy's final velocity upon impact is 7.68 m/s, and assuming he starts from rest, the initial velocity is 0 m/s. The calculated average velocity during impact is therefore 3.84 m/s. Additionally, it is clarified that weight is a force measured in Newtons, with the boy's weight being 700 N, derived from his mass of 70 kg and gravitational acceleration of 10 m/s².

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  • Understanding of basic physics concepts, including velocity and acceleration.
  • Familiarity with the formula for average velocity.
  • Knowledge of the relationship between mass, weight, and gravitational force.
  • Basic algebra skills for manipulating equations.
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  • Study the principles of kinematics in physics.
  • Learn about the concepts of impulse and momentum.
  • Explore the effects of gravitational acceleration on falling objects.
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Atilla1982
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A boy with a weight of 70 kg jumps down from a 3 meter high tree. His velocity on impact I have found to be 7,68 m/s and the impulse is 536,7kg*m/s. Now I need to find the average velocity during impact. What formula do I have to use?
 
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What's the definition of average velocity?
 
I suppose, if acceleration is constant, then:

vave. = (v1 + v0)/2

An important point I'd like to raise here:

Weight is a force, therefore it has the units of Newtons. Obviously the man doesn't have a mass of 7kg so I can only assume the his weight is 700N (with g = 10ms-2).

Regards,
Sam
 

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