Is my speed calculation correct?

  • Thread starter madeeeeee
  • Start date
  • #1
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Homework Statement


Kayleigh is standing on top of a 30 m high cliff shoots a 500 g arrow with a speed of 25 m/s. What is the impact speed of the arrow right before it strikes the ground below? Ignore air resistance and friction.


Homework Equations


Et= Ek+Eg


The Attempt at a Solution



1/2mv1^2 + mgh = 1/2mv2^2

v2^2= Square root of 2(1/2 (25m/s)^2 + (9.8 m/s^2)(30m)
vs^2= 34.82 m/s


Is my answer correct?
 

Answers and Replies

  • #2
rock.freak667
Homework Helper
6,230
31
Yes it looks correct to me.
 

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