A problem invovling Force, Impulse, Velocity and Acceleration

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SUMMARY

The discussion revolves around a Grade 11 Physics problem involving a 240 kg satellite moving at 6000 m/s that is deflected by an unknown object over 0.5 seconds. The key equations highlighted include Impulse = Force * Time and the relationship between impulse and momentum. The solution requires calculating the impulse needed to change the satellite's direction while maintaining its speed, emphasizing the dual forces acting on the satellite: one to stop its original motion and another to redirect it at right angles.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Familiarity with the concepts of impulse and momentum
  • Basic knowledge of vector components in physics
  • Ability to perform calculations involving mass, velocity, and time
NEXT STEPS
  • Study the concept of impulse and its mathematical representation
  • Learn how to calculate momentum and its changes during collisions
  • Explore vector decomposition to analyze forces acting at right angles
  • Review Newton's second law and its application in impulse problems
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Students studying Grade 11 Physics, particularly those tackling problems involving forces, impulse, and momentum in motion scenarios.

flumbie
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Homework Statement


Heres the problem i have been given in Grade 11 Physics for homework (keep in mind that i haven't done calculus yet so don't do anything too tricky):

A satellite of mass 240 kg moving in free space at a velocity of 6000m/s is struck by an unknown object which causes it to be deflected onto a new path at right angles to its original direction of motion in 0.5 s. Find the impulse which acted upon the satellite if it continued to move at the same speed after deflection. Diagramativally show the change in direction that would occur.

Homework Equations



I'm pretty sure that the equation Impulse=Force * time or F*t = mass * Acceleration will be in it.
From the word problem i know that:
M= 240kg T= 0.5s and velocity is 6000 m/s

The Attempt at a Solution



I think i need to find the acceleration so that i can find the force and then the impulse but I am not sure how to go about that since the speed is the same after the direction as it is at the start
I know that I = F * 0.5 but I am really not sure how to find the Force
I think that ill be able to do the diagram fine but for the rest a hefty shove in the right direction would be nice. Thanks in advance.
 
Last edited:
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Well... Impulse is Force *time. But it is also the change in momentum of the object.

So the impulse required to stop the object is equal to its mass time its velocity.

This requires a force acting over a certain period of time.

Breaking the question into 2 parts we can imagine that there are two forces acting, one to stop the object and the other to pushe it off at right angles.

First of all there is the impulse required to stop it. This will be equal in this case to the impulse to get it going again at right angles.

Is this helpful?
 
Thanks

Yeah, thanks a heap
 

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