A particle of mass 2kg is subject to a drag force from the air: F(v)= -0.5v^2. The initial displacement of the mass is zero and the initial speed is 1ms. Find an expression for x(t) and hence work out x(4)(adsbygoogle = window.adsbygoogle || []).push({});

Ive got this question in one of my text books and cant seem to get it to work, could anybody help me with the answer at all?

I have tried a few things, and i know i have to integrate, but i am getting a bit confused :s. If somebody could show me how its done, then i can look back at it and understand all the steps, as there is other questions like this i plan to eventually answer.

Thanks Alot :D

**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!

# Homework Help: Help with question mass/displacement

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