Calculating Boat's Speed After Package Throw

In summary, linear momentum is a physical quantity that describes an object's motion and is calculated by multiplying its mass and velocity. The unit of measurement is kilogram-meter per second (kg*m/s) and it is conserved in a closed system according to the law of conservation of momentum. A common example in everyday life is a moving car, where its mass and velocity determine its momentum.
  • #1
chibichibi7554
12
0

Homework Statement



A child throws, at 10 m/s, a 3.4 KG package, horizontally, from a boat. The boat weighs 60 kg and the child weights 20 kg. If the boat was initially at rest, what was it's speed, after the throw?


Homework Equations



mv+mv=mv+mv

The Attempt at a Solution



I am not sure, do you have to add in the boat and child weight together so it is

mv+mv=mv+mv
0+0=(3.4)(10)+(20+60)v
v=-.425
 
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  • #2
That's correct.
 
  • #3
yay! thank you! this is the first time all year i know what i am doing
 

Related to Calculating Boat's Speed After Package Throw

What is linear momentum?

Linear momentum is a physical quantity that describes the motion of an object. It is defined as the product of an object's mass and its velocity.

How is linear momentum calculated?

Linear momentum is calculated by multiplying an object's mass by its velocity. The equation for linear momentum is p = m * v, where p is momentum, m is mass, and v is velocity.

What is the unit of measurement for linear momentum?

The unit of measurement for linear momentum is kilogram-meter per second (kg*m/s).

Is linear momentum conserved?

According to the law of conservation of momentum, linear momentum is conserved in a closed system. This means that the total momentum of a system remains constant, even if there are interactions between objects within the system.

What is an example of linear momentum in everyday life?

A common example of linear momentum is a moving car. The car's mass and velocity determine its momentum, and this momentum will remain constant unless an external force acts upon the car, such as braking or colliding with another object.

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