AP Physics 1 homework help

  • Thread starter nenders
  • Start date
  • #1
3
0

Homework Statement

[/B]
Problem: Sanjay's air boat starts from rest and accelerates at 9.1 m/s2 for a distance of 216 meters. How fast is it moving at the end of the 216 meters?
And how much time will it take to cover this distance?

Known: Vi = 0m/s

A = 9.1m/s
D = 216m

Homework Equations


Vx=Vx0+axt

The Attempt at a Solution


In all honesty I am very confused about this question; any little tips would help! I have tried a few different equations that my teacher has provided us, and each time the question has been wrong. Any ideas on how to approach this kind of question? Any help is appreciated!
 

Answers and Replies

  • #2
stockzahn
Homework Helper
Gold Member
498
136
Hi,

the question seem to be tricky, because in the statement the chronological order of the necessary results to solve the problem is reversed. At first you have to calculate the necessary time the ship needs. With this result you can solve the first question with the equation you already provided in 2).

Any ideas about the connectedness between distance, time and a constant acceleration?
 
  • #3
3
0
Hi,

the question seem to be tricky, because in the statement the chronological order of the necessary results to solve the problem is reversed. At first you have to calculate the necessary time the ship needs. With this result you can solve the first question with the equation you already provided in 2).

Any ideas about the connectedness between distance, time and a constant acceleration?

No idea, I am very confused about this question. :oldconfused:
 
  • #4
stockzahn
Homework Helper
Gold Member
498
136
Okay, with the formula you provided, you can calculate the velocity of the ship after 1 second, after 2 seconds, after 3 seconds, ...

How can you calculate the travelled distance if you know speed and time?
 
  • #5
3
0
Okay, with the formula you provided, you can calculate the velocity of the ship after 1 second, after 2 seconds, after 3 seconds, ...

How can you calculate the travelled distance if you know speed and time?
We already know the distance, it's 216m.
Why would we have to calculate it? :oldconfused:
 
  • #6
stockzahn
Homework Helper
Gold Member
498
136
It is to find the equation you need to solve the problem and it is easier to do it step by step. It won't take long. So what would be the velocity of the ship with the given acceleration at

t = 1s: v = ...
t = 2s: v = ...
t = 3s: v = ...

... and if you know the velocity and the time how to calculate a travelled distance?
 

Related Threads on AP Physics 1 homework help

  • Last Post
Replies
9
Views
3K
  • Last Post
Replies
5
Views
6K
  • Last Post
2
Replies
30
Views
4K
Replies
8
Views
3K
Replies
0
Views
3K
  • Last Post
Replies
2
Views
4K
Replies
2
Views
176
  • Last Post
Replies
5
Views
6K
  • Last Post
Replies
1
Views
6K
  • Last Post
Replies
4
Views
3K
Top