What is the change in momentum when an object is brought to rest?

  • Thread starter Thread starter elissadi
  • Start date Start date
  • Tags Tags
    Impulse
AI Thread Summary
To calculate the change in momentum when an object is brought to rest, one must consider the object's mass and initial speed. Momentum is defined as p=mv, where "m" is mass and "v" is velocity. When the object comes to rest, its final velocity is zero, resulting in a change in momentum equal to the initial momentum. The impulse experienced by the object is equivalent to this change in momentum. Therefore, the impulse can be directly calculated from the initial momentum without needing force or time values.
elissadi
Messages
10
Reaction score
0
If you know the mass of an object and the speed of its motion, how do you calculate how large the impulse is when it is caught or stopped?
 
Physics news on Phys.org
The impulse is simply the change in momentum.

Do you know how to calculate momentum?
 
yes, momentum is p=mv, which would give me the "t" for impulse = Ft which would give me the impulse?
 
elissadi said:
yes, momentum is p=mv, which would give me the "t" for impulse = Ft which would give me the impulse?
As brewnog stated, the impulse equals the change in momentum. What's the change in momentum when the object is brought to rest. (No need to use F or t, luckily, since these are not given.)
 
Thread 'Voltmeter readings for this circuit with switches'
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Thread 'Correct statement about a reservoir with an outlet pipe'
The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
Back
Top