I’m not sure if this is the right place to post this but I need help understanding this question…
Discounting air friction, approximately how far will the boulder have fallen in 2 seconds?
2. Relevant equations
x-x_0 = v_0t + 1/2at^2
3. The attempt at a solution
Now I know this is just a plug and chug equation and the answer is 45m (B). My question is more in understanding the physics behind using this equation….
Originally i used a=Δv/Δt then plugged my found velocity into v=d/t but that gives me 40m, which is not an option.
How do I know when to use which?
Thanks for any help in clarifying this for me! 😀