Ask Experts Questions for FREE Help !
Ask
    simmon's Avatar
    simmon Posts: 3, Reputation: 1
    New Member
     
    #1

    Feb 20, 2009, 03:10 AM
    Relative velocity
    Ball is thrown at 16.1 m/s inside a boxcar
    Moving along the tracks at 29.4 m/s .
    What is the speed of the ball relative to the
    Ground if the ball is thrown forward? Answer
    In units of m/s.
    sarnian's Avatar
    sarnian Posts: 462, Reputation: 9
    -
     
    #2

    Feb 22, 2009, 07:44 PM
    simmon


    This is your homework, and you have to do the thinking. I just provide hints.

    The car and everything in it is moving forwards at 29.4 m/s.
    So that ball is already moving forwards at 29.4 m/s.
    And than you add 16.1 m/s forwards to that.
    So what speed forwards will that ball have than?

    Brainteaser : what would (relative to the ground) the speed of the ball be, if thrown backwards at 29.4 m/s?

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search


Check out some similar questions!

Speed and velocity [ 2 Answers ]

Can average speed to equal to equal to average

How can I put a relative out? [ 4 Answers ]

My husband's grandmother died without leaving a WILL. She had 2 living children. Both live in the house. One of them is on drugs,steals from the house, makes violent threats and doesn't pay any bills. Is there a way to put him out of the house?

Physics velocity [ 8 Answers ]

A student throws a baseball vertically upward, and 2.8s later catches it at the same level. Neglecting air resistance, calculate the following. a) velocity at which the ball left the student's hand answer : 14m/s b) the heigt to which the bal climbed above the students hand answer : 9.6m

Velocity [ 1 Answers ]

The orbit of Halley's Comet around the Sun is a long thin ellipse. At its aphelion (point farthest from the Sun), the comet is 5.1 1012 m from the Sun and moves with a speed of 12.0 km/s. What is the comet's speed at its perihelion (closest approach to the Sun) where its distance from the Sun is...


View more questions Search