A spring is intended to accelerate a projectile of $($mass $1\mathrm{.}02$g$)$ to a velocity of $30$ m$/$s in $0\mathrm{.}10$s$.$ What force is required to retain this spring? What spring constant $($k$)$ would be required of the spring, if the displacement of the spring $($x$)$ was $3\mathrm{.}5$cm$?$

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Given Mass of the projectile m 102 g 000102 kg Final velocity of the projectile v 30 ms Time tak... View the full answer