Finding Velocity given the initial velocity and weight

In summary, the formula for finding velocity given the initial velocity and weight is v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time. Weight does not directly affect the velocity of an object, but changes in weight can affect the object's acceleration and ultimately its velocity. The initial velocity and weight, along with other factors, can be used to calculate the final velocity using the formula v = u + at. The initial velocity has a direct impact on the final velocity, with a higher initial velocity resulting in a higher final velocity. The final velocity of an object can be greater than the initial velocity if the object is accelerating, meaning its velocity is increasing over time
  • #1
dtmirand
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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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  • #2
Do you know about conservation of momentum?
 

FAQ: Finding Velocity given the initial velocity and weight

1. What is the formula for finding velocity given the initial velocity and weight?

The formula for finding velocity given the initial velocity and weight is v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time.

2. How does weight affect the velocity of an object?

Weight does not directly affect the velocity of an object. However, if the weight of an object changes, it can affect the acceleration of the object, which in turn can affect its velocity.

3. Can the initial velocity and weight of an object determine its final velocity?

Yes, the initial velocity and weight of an object, along with the acceleration and time, can be used to calculate the final velocity using the formula v = u + at.

4. How does the initial velocity affect the final velocity of an object?

The initial velocity has a direct impact on the final velocity of an object. A higher initial velocity will result in a higher final velocity, assuming all other factors remain constant.

5. Can the final velocity of an object be greater than the initial velocity?

Yes, the final velocity of an object can be greater than the initial velocity if the object is accelerating. This means that its velocity is increasing over time, resulting in a final velocity that is greater than the initial velocity.

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