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

AI Thread Summary
To solve the problem of a car with an initial velocity of 25 m/sec north and a constant acceleration of 3 m/sec² south, the relevant SUVAT equations need to be applied. The equation V = Vo + at can be used, where Vo is the initial velocity, a is the acceleration, and t is the time. After 6 seconds, the car's velocity can be calculated as V = 25 m/sec - (3 m/sec² * 6 sec), resulting in a final velocity of 7 m/sec south. The discussion highlights the need for clarity on which SUVAT equations to use for problems involving velocity and acceleration. Understanding these equations is crucial for solving similar physics problems effectively.
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...
 
Physics news on Phys.org
What are some of the other SUVAT equations, and which one of these involves only velocity and acceleration?
 
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