I have a High school physics exam study guide? cant solve

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SUMMARY

The discussion centers on a physics problem involving a car with an initial velocity of 25 m/sec north and a constant acceleration of 3 m/sec2 south. After 6 seconds, the car's final velocity is calculated using the SUVAT equations. The correct answer is determined to be 7 m/sec south, as the acceleration opposes the initial velocity, reducing it significantly. The participant seeks clarification on the appropriate SUVAT equations to use for solving such problems.

PREREQUISITES
  • Understanding of kinematics and SUVAT equations
  • Knowledge of initial and final velocity concepts
  • Familiarity with acceleration and its effects on motion
  • Basic algebra for solving equations
NEXT STEPS
  • Study the SUVAT equations in detail, focusing on their applications
  • Learn how to calculate final velocity using the equation V = Vo + at
  • Explore examples of motion with constant acceleration
  • Practice solving problems involving opposing forces and their impact on velocity
USEFUL FOR

High school students preparing for physics exams, educators teaching kinematics, and anyone looking to strengthen their understanding of motion under constant acceleration.

baustin
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Homework Statement


A car moving with an initial velocity of 25 m/sec north has a constant acceleration of 3 m/sec2 south. After 6 seconds its velocity will be?

7 m/sec north

7 m/sec south

43 m/sec north

20 m/sec north

20 m/sec south

Homework Equations


Im not sure, but X-Xo=0.5( V + Vo) (t)

The Attempt at a Solution


X=
V= 25/3 (6)
Not even sure where to go from here...
 
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What are some of the other SUVAT equations, and which one of these involves only velocity and acceleration?
 

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