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Secondaire 3 • 2m

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
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  • Explication d'Alloprof

    Explication d'Alloprof

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

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    Équipe Alloprof • 2m

    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 !

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