Two dimensional acceleration question

  • Thread starter F.B
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  • #1
F.B
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My book stinks it doesnt explain or show you how to do enough examples. But anyways i have another problem now. I figured out how to do my other question. Anyways my question is.......

A car with a velocity of 25 m/s [E] changes its velocity to 25 m/s in 15s. Calculate the car's average acceleration.

How do i start this question off. I dont know what to do.
 

Answers and Replies

  • #2
2Pac
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Are we looking for a magnitude of acceleration or a vector form?
 
  • #3
F.B
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the magnitude and degrees/direction
 
  • #4
Doc Al
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Use the definition of average (vector) acceleration:
[tex]\vec{a}_{ave} = \frac{\Delta \vec{v}}{\Delta t}[/tex]

(Hint: To find the change in the velocity, write the initial and final velocity in component form and then subtract.)
 

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