- #1
Fabrizio Vassallo
- 17
- 6
1. Problem statement:
"An object is thrown horizontally with an initial speed of 10 m/s. How far will it drop in 4 seconds?"
Δx = v0x.t
Δy = v0y.t + 1/2(-g)t2
[/B]
When I first read it, I thought that 'how far' means Δx, since when someone says 'how far did you throw the ball' you would usually answer something like 'I threw it like 10 yards', and that is referring to Δx. However, the Princeton book says that when asked 'how far' it means Δy instead, so I would like to know if anyone here has a way to explain me what I am not understanding, or, if it corresponds, clarify that the book whether the book is wrong.
For more context, I'm preparing for the SAT Subject Test in Physics. I'm from Argentina, so I do not speak English as my main language, and this might be why I'm confused. The book I refer to is the Princeton Review's 'Cracking the SAT Subject Test in Physics' one (16th edition).
Thank you in advance to anyone who replies!
"An object is thrown horizontally with an initial speed of 10 m/s. How far will it drop in 4 seconds?"
Homework Equations
Δx = v0x.t
Δy = v0y.t + 1/2(-g)t2
The Attempt at a Solution
[/B]
When I first read it, I thought that 'how far' means Δx, since when someone says 'how far did you throw the ball' you would usually answer something like 'I threw it like 10 yards', and that is referring to Δx. However, the Princeton book says that when asked 'how far' it means Δy instead, so I would like to know if anyone here has a way to explain me what I am not understanding, or, if it corresponds, clarify that the book whether the book is wrong.
For more context, I'm preparing for the SAT Subject Test in Physics. I'm from Argentina, so I do not speak English as my main language, and this might be why I'm confused. The book I refer to is the Princeton Review's 'Cracking the SAT Subject Test in Physics' one (16th edition).
Thank you in advance to anyone who replies!