Ask Experts Questions for FREE Help !
Ask
    twz06's Avatar
    twz06 Posts: 7, Reputation: 1
    New Member
    		  
    #1

    Aug 28, 2007, 03:17 PM
    Constant acceleration, with initial velocity
    A bolt comes loose from the bottom of an elevator that is moving upward at a speed of 6.50 m/s. The bolt reaches the bottom of the elevator shaft in 4.55 s. How high up was the elevator when the bolt came loose?
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
    Uber Member
    		  
    #2

    Aug 28, 2007, 11:39 PM
    Hi, sounds like one of the suvat equations will do it.

    You know a, t, and u and you want to find s. You don't want an equation with v in it though.

    Can you identify which one you can use?
    twz06's Avatar
    twz06 Posts: 7, Reputation: 1
    New Member
    		  
    #3

    Aug 29, 2007, 05:54 AM
    Would you use the equation x=xi+vi(t)+1/2at^2?? I'm still stumped
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
    Uber Member
    		  
    #4

    Aug 29, 2007, 05:56 AM
    Erm, I think that's the one.

    s = ut+1/2at^2

    just plug in the numbers and you get a reasonable looking s
    twz06's Avatar
    twz06 Posts: 7, Reputation: 1
    New Member
    		  
    #5

    Aug 29, 2007, 06:04 AM
    What stands for "u" I think I have different variables, what is your u??
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
    Uber Member
    		  
    #6

    Aug 29, 2007, 08:53 AM
    u is normally initial velocity.

    I understand your equation now, yes that's the right one to use.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

How to draw acceleration versus velocity graph when an object is falling? [ 6 Answers ]

Do you guys know what would be the curve looks like in the acceleration versus velocity graph? (including the air resistance when an object is falling) Thank you!

Constant acceleration [ 3 Answers ]

A car travelling at 100km/h takes 65 m to stop after the driver sees a child run on to the road chasing a ball. If the driver's reaction time is 0.25s, calculate the deceleration of the car. Thanks

Constant acceleration [ 3 Answers ]

;) hiii I realli need help with the below question... A bullet passes through a board, the velocity on entering being 1200 m/s and on leaving 1100m/s. how many such boards of equal thickness placed one behind the other will the bullet penetrate assuming constant retardation. :confused: Thanks...

Constant acceleration [ 2 Answers ]

Hey help me with this question :o A body moving with constant accelertion and starting from rest covers 9m in the eighth second. Find the acceleration Thankss:)

Constant acceleration [ 2 Answers ]

Hey I was wondering if anyone can help me on this problem below :) The velocity of a particle moving in a straight ine with uniform acceleration increases from 10m/s to 20m/s in 30m. When and where was the velocity 15m/s Thx:D

View more questions Search