How Is Momentum Calculated in Projectile Motion?

  • Thread starter Thread starter gcombina
  • Start date Start date
  • Tags Tags
    Projectile
Click For Summary

Homework Help Overview

The discussion revolves around calculating momentum in the context of projectile motion, specifically focusing on a scenario involving a projectile launched with a known momentum and a participant's weight. The problem raises questions about the relationship between momentum and kinetic energy.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the formulas related to momentum and kinetic energy, with one attempting to derive mass from momentum and velocity. There is uncertainty about how to find the velocity needed for calculations.

Discussion Status

Some participants express confusion regarding the calculations and the relationships between the variables involved. One participant indicates they have found an answer, but the details of that resolution are not shared.

Contextual Notes

There is a mention of needing to find the value of velocity, which suggests that some information may be missing or assumptions are being questioned. The original poster's weight is provided, but its relevance to the momentum calculation is not fully explored.

gcombina
Messages
157
Reaction score
3
A projectile is launched with 200 kg.m/s. If Jennifer weighs 583 N, what is the magnitude of her momentum?
a) 97.0 kg.m/s
b) 137 kg.ms
c) 68.6 kg.m/s
d) 672 kg.m/s
e) 951 kg/m/s
 
Physics news on Phys.org
My attempt so I got these two formulas
1) P = mv = 200 kg
2) KE = 1/2 mv

so I need mass right? so I said ok, m = P/v
I solve for m = p/v
m = 200 / v
then i got stocked
I need to find the value of "v"
so I went to KE = 1/2 mv
mv = KE / (1/2)
v = (KE/1/2) / m
v = (1000 / (1/2) ) / m
v = 2000 / m
 
I am lost
 
Kinetic energy= ##\frac{1}{2}mv^2##
 
thank you! got the answer! :)
 

Similar threads

  • · Replies 8 ·
Replies
8
Views
6K
  • · Replies 11 ·
Replies
11
Views
4K
  • · Replies 4 ·
Replies
4
Views
5K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 10 ·
Replies
10
Views
9K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 18 ·
Replies
18
Views
3K
  • · Replies 13 ·
Replies
13
Views
1K
Replies
7
Views
2K