Skip to content

Zone d’entraide

Question de l’élève

Secondaire 3 • 9m

On Planet X, Arthur throws a ball upwards at 26.5 m/s. If the ball rises and falls back into his hand 24.0 s after the throw, what is the is the gravitational acceleration of this planet? 

Physique
avatar
avatar

{t c="richEditor.description.title"} {t c="richEditor.description.paragraphMenu"} {t c="richEditor.description.inlineMenu"} {t c="richEditor.description.embed"}

Explications (1)

  • Explication d'Alloprof

    Explication d'Alloprof

    Cette explication a été donnée par un membre de l'équipe d'Alloprof.

    Options
    Équipe Alloprof • 9m

    Hi !

    Taking in account the conservation of movement, the speed of throw should be the same as when it comes back to the same spot (\(v_i=v_f\)). Then, you can use one of the UARM equations :


    image.png


    With the value of time, you can calculate a, the acceleration.

    I hope the helps and if you have anyother questions, feel free to ask them.

    Have a nice evening !

Poser une question