Finding Velocity given the initial velocity and weight

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SUMMARY

The discussion focuses on calculating the final velocity of a raft after an 80-kilogram man jumps off with an initial velocity of 7 meters per second. The problem leverages the principle of conservation of momentum, which states that the total momentum before the jump equals the total momentum after the jump. Given the weights of the man (80 kg) and the raft (100 kg), the final velocity of the raft can be determined using the equation for momentum conservation.

PREREQUISITES
  • Understanding of conservation of momentum
  • Basic knowledge of physics equations related to motion
  • Familiarity with mass and velocity concepts
  • Ability to manipulate algebraic equations
NEXT STEPS
  • Study the conservation of momentum in closed systems
  • Learn how to apply the momentum equation: m1v1 + m2v2 = m1v1' + m2v2'
  • Explore examples of momentum conservation in real-world scenarios
  • Investigate the effects of friction on momentum calculations
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Students studying physics, educators teaching mechanics, and anyone interested in understanding momentum and its applications in real-life situations.

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Homework Statement


An 80-kilogram man jumps off a raft that weighs 100 kg. His initial velocity from jumping is 7 meters per second. Assuming that the friction resistance of the water is zero, the velocity of the raft after the man jumps will be?


Homework Equations


Vf^2= Vi^2 + 2aD

The Attempt at a Solution


I am trying to figure out the velocity of that raft after the man jumps, the question is confusing me on which variable I need to solve the problem. Any help?
 
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