Calculating Final Speed of Sled with Bobsledders Jumping In

In summary, the conversation discusses the conservation of energy and momentum, which is a fundamental law in physics stating that these properties cannot be created or destroyed, only transferred or transformed. Energy and momentum are closely related, with the law of conservation of momentum being a consequence of the law of conservation of energy. Kinetic energy is the energy an object has due to its motion, while potential energy is the energy an object has due to its position or state. Energy and momentum can be transferred through various mechanisms, such as mechanical work, heat transfer, and electromagnetic radiation. Real-world applications of this law include collisions between objects, motion of satellites and planets, and the operation of machines and engines.
  • #1
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14
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Homework Statement


Four 63kg bobsledders psuh their sled which has a mass of 210kg when empty. They start to push over a flat frictionless surface at an initial speed of 3m/s. At intervals of 2s, each bobsledder sprints forwards at a speed of 2m/s faster than the sled's current speed and then jumps in.

What is the sled's final speed once everyone is in?


Homework Equations


p'=p


The Attempt at a Solution


m1v1=v(mtotal)
m1 is sled's mass.
 
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  • #2
V = 3 + 2 + 2 + 2 + 2 + 2 + 2

I wrote down too many twos, how many?
 

FAQ: Calculating Final Speed of Sled with Bobsledders Jumping In

What is the conservation of energy and momentum?

The conservation of energy and momentum is a fundamental law in physics that states that energy and momentum cannot be created or destroyed, but can only be transferred or transformed from one form to another.

How are energy and momentum related?

Energy and momentum are closely related and can be thought of as two different aspects of the same physical property. In fact, the law of conservation of momentum is a direct consequence of the law of conservation of energy.

What is the difference between kinetic and potential energy?

Kinetic energy is the energy an object possesses due to its motion, while potential energy is the energy an object possesses due to its position or state. Kinetic energy is a form of energy that an object has because of its motion, while potential energy is a form of energy that an object has because of its position or condition.

How can energy and momentum be transferred?

Energy and momentum can be transferred through various mechanisms such as mechanical work, heat transfer, and electromagnetic radiation. For example, when a ball is thrown, kinetic energy and momentum are transferred from the thrower to the ball.

What are some real-world applications of conservation of energy and momentum?

The law of conservation of energy and momentum has many real-world applications. Some common examples include collisions between objects, motion of satellites and planets, and the operation of machines and engines such as cars and airplanes.

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