Not sure which formula to use for this problem

  • Thread starter Thread starter ash312
  • Start date Start date
  • Tags Tags
    Formula
Click For Summary
SUMMARY

The discussion revolves around a physics problem involving a woman traveling at 50 km/h who must stop before reaching a broken bridge 150 meters ahead. Key calculations include converting her speed to 13.8 m/s and factoring in a 1.4-second reaction time before deceleration at -2.3 m/s². The final calculations reveal that she stops within 41.4 meters, confirming she does not reach the bridge. The use of kinematic equations, particularly V² = V₀² + 2aD, is crucial for determining the stopping distance.

PREREQUISITES
  • Understanding of kinematic equations in physics
  • Ability to convert units from km/h to m/s
  • Knowledge of acceleration and deceleration concepts
  • Familiarity with basic algebra for solving equations
NEXT STEPS
  • Study the application of kinematic equations in real-world scenarios
  • Learn about the effects of reaction time on stopping distance
  • Explore advanced topics in physics such as dynamics and motion analysis
  • Practice solving similar problems involving deceleration and stopping distances
USEFUL FOR

Students studying physics, educators teaching kinematics, and anyone interested in understanding motion and stopping distances in real-life situations.

  • #31
thats correct yeah. lucky girl
 
Physics news on Phys.org
  • #32
LOL! yes She gets to survive! we saved her! Anyway Thanks a lot! i think i learned somthint here!
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 4 ·
Replies
4
Views
645
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 34 ·
2
Replies
34
Views
3K
  • · Replies 1 ·
Replies
1
Views
1K
Replies
3
Views
2K
  • · Replies 7 ·
Replies
7
Views
5K
Replies
2
Views
9K