Solve Vehicle Collision Problems with Quick Homework Help – No Numeric Answers

  • Thread starter Thread starter lufbra08
  • Start date Start date
  • Tags Tags
    Homework
AI Thread Summary
A user is seeking help with a physics problem involving a collision between two vehicles of different masses. They have successfully calculated the speed of the vehicles after impact but are struggling with determining the force of the impact and the acceleration during the collision. The discussion emphasizes the importance of understanding momentum changes for both vehicles involved in the collision. Participants highlight that the total momentum change for the system must be considered to find the force. The conversation focuses on conceptual understanding rather than providing numeric answers.
lufbra08
Messages
5
Reaction score
0
Hi all, struggling with a question.

A vehicle of mass 600kg, moving at a speed of 30m/s, collides with a stationary vehicle of mass 900kg. The two vehicles lock together on impact. Calculate

a) The speed of the vehicles immediately after impact

b) the force of the impact, if the duration of the collision was 0.15s,

c) the acceleration of each vehicle during the collision.

I've done part a, but struggling with b). Any help much appriciated, no numeric answers though please.

Thanks all
 
Physics news on Phys.org
Force= rate of change of momentum
 
rock.freak667 said:
Force= rate of change of momentum

I know that, but is it the rate of change of momentum for the whole system, as the moving car slows down, whereas the stationary car speeds up after the collision. So how would I find the change in momentum?
 
Can anyone help, I really need this homework done?
 
Change = Final value - Initial value

You are right, one car slows down and the other speeds up and the momentum of either car changes. What is the sum of the two momentum changes, though?
 

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »

Similar threads

Would conservation of momentum apply in this vehicle accident homework problem?
Replies
23
Views
1K
Speed of each vehicle after the collision?
Replies
1
Views
2K
Calculating Speed and Kinetic Energy in a Car Collision
Replies
8
Views
3K
2-D Linear Momentum, Collision Problem
Replies
1
Views
2K
Physics displacement velocity mass elastic/inelastic help
Replies
6
Views
2K
Acceleration in One Dimensional Inelastic Collision
Replies
33
Views
4K
Solving a Head-on Collision: Qs 1-4
Replies
5
Views
3K
Modeling vehicle lift in uphill front end collision
Replies
18
Views
2K
Issac Physics 'Three Collisions' High School Homework - Kinematic
Replies
4
Views
2K
Work done during a collision -- Change in Kinetic Energy & change in Momentum
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top