What is the velocity of the car

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SUMMARY

The discussion focuses on calculating the final velocity of a car subjected to a braking force. A force of 100 N is applied to a 2000 kg car initially moving at 2.6 m/s. Using the formula for acceleration (a = F/m), the acceleration is determined to be 0.05 m/s². After two seconds of braking, the final velocity is calculated to be 2.5 m/s, confirming the correctness of the approach and calculations presented.

PREREQUISITES
  • Understanding of Newton's Second Law (F = ma)
  • Basic knowledge of kinematics equations
  • Familiarity with units of force (Newtons) and mass (kilograms)
  • Ability to perform basic arithmetic operations with units
NEXT STEPS
  • Study the implications of varying forces on acceleration in different mass scenarios
  • Learn about the effects of friction on braking distance and velocity
  • Explore advanced kinematics equations for non-constant acceleration
  • Investigate real-world applications of braking systems in automotive engineering
USEFUL FOR

This discussion is beneficial for physics students, automotive engineers, and anyone interested in understanding the principles of motion and braking dynamics in vehicles.

jammhawk
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Homework Statement


A 100 N force is applied with the help of the brakes of a 2000 kg car while the car is movign at 2.6 m/s speed. Two seconds later, the velocity of the car is


Homework Equations


a= F/m
v= vinitial - at


The Attempt at a Solution


a=100 N/2000 kg
a=.05

v=2.6m/s - .05(2)
v=2.6m/s - .1m/s
v=2.5m/s

So the answer is 2.5m/s. Am i going in the correct direction?
 
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jammhawk said:
So the answer is 2.5m/s. Am i going in the correct direction?
Yes!
 

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