Two students $($Student A and Student B$)$ are playing tennis. Each student's tennis racket is $0\mathrm{.}3$ kg$.$ First, Student A hits a $0\mathrm{.}06$ kg tennis ball toward Student B$.$ Just before Student B hits the ball, it has a velocity of $17$ m$/$s $.$ After Student B hits the ball, it has a velocity of $20$ m$/$s $.$

Based on the tennis ball's change in momentum, what is the change in momentum of Student B$\text{'}$s racket?

$2\mathrm{.}2$ kg $$ m$/$s $2\mathrm{.}2$ kg $$ m$/$s $3\mathrm{.}0$ kg $$ m$/$s $3\mathrm{.}0$ kg $$ m$/$s $$

$$ Correct, the change in momentum of the tennis racket is equal to the difference in the final and initial momentum of the ball.

If Student B$\text{'}$s racket has an initial velocity of $26$ m$/$s $,$ what is the final velocity $($in m$/$s$)$ just after hitting the ball?

$3\mathrm{.}6$

$-19$

$$ Incorrect. Remember the change in momentum is equal to the difference in the final and initial momentum of the ball. m$/$s $$