Verifying: Solving Quadratic Equations for Time

Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
1 reply · 5K views
savva
Messages
39
Reaction score
0
Could anyone please verify with me that I have the right idea in answering the question below.

Homework Statement


If you know the initial velocity v0 and the initial and final heights y0 and y, you can use x=x0+v0t+(1/2)at^2 to solve for the time t when the object will be at height y. But the equation is quadratic in t, so you'll get two answers. Physically, why is this?

The Attempt at a Solution


This occurs because during the motion of an object it has passed through it's initial displacement on 2 occassions. Thus times occur twice.
 
Physics news on Phys.org