Question is a golf ball is dropped from a height of 78m assuming gravity is 9.8 m s, What is the velocity of the ball after the first 10m.(adsbygoogle = window.adsbygoogle || []).push({});

I assume the equation to use is [tex]v^2=u^2+2ax[/tex]

v = Final velocity

u = Initial Velocity

a = Acceleration

x = Displacement

So I plug in [tex]v^2 = 0+2(9.8ms)(10.0)[/tex]

Now according to the answer sheet V should be 14.0 m s but no matter how I plug this in I cant seem to get the right answer.

I think the problem is the way I am actually doing the math so if someone could perhaps step threw the maths so I can see where I went wrong.

Thanks for any help

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Calculating Final Velocity

**Physics Forums | Science Articles, Homework Help, Discussion**