Please help with my homework

  • Thread starter ross118
  • Start date
  • #1
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1. how far does a girl running at a speed of 3m/s travel in 6 seconds?

2. i dont know :/



3. i really need help

Homework Statement





Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
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Welcome to Physics forums.

Here is a simple trick to remembering how to get distance from velocity.

How man meters a second is she going and how many seconds is she running for?

She is running at 3m/s and she is running for 6s

hope this helps
 
  • #3
445
5
1. how far does a girl running at a speed of 3m/s travel in 6 seconds?

2. i dont know :/



3. i really need help

Homework Statement





Homework Equations





The Attempt at a Solution



What does 3 m/s mean?
 
  • #4
1,033
1
A helpful tactic for you, Ross, is something called dimensional analysis. Dimensional analysis is very useful in checking that your answer is correct, as well as understanding the logic behind the units being used. http://www.alysion.org/dimensional/fun.htm
 
Last edited:
  • #5
445
5
It means 3 metres per second. Which means that every second that passes the girl moves three metres. So if shes travelling for 10 seconds, thats three metres every second, thats 10 x 3, thats 30 metres.

Another tactic that will help you is dimensional analysis. Dimensional analysis basically means that you are using the units of measurement to deduce the correct steps. http://www.alysion.org/dimensional/fun.htm
Yes, I know that, does the OP?
 
  • #6
1,033
1
Yes, I know that, does the OP?
Oh sorry! I thought the OP said that. Apologies. I'll edit my post :redface:
 

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