A ball $($mass $0\mathrm{.}40$ kg$)$ is initially moving to the left at $30$ m$/$s$.$ After hitting the wall, the ball is moving to the right at $20$ m$/$s$.$ What is the impulse of the net force on the ball during its collision with the wall?

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A ball $($mass $0\mathrm{.}40$ kg$)$ is initially moving to the left at $30$ m$/$s$.$ After hitting the wall, the ball is moving to the right at $20$ m$/$s$.$ What is the impulse of the net force on the ball during its collision with the wall?

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$20$ kg $$ m$/$s to the left

$4\mathrm{.}0$ kg $$ m$/$s to the right

$4\mathrm{.}0$ kg $$ m$/$s to the left

none of the above

$20$ kg $$ m$/$s to the right