A tennis ball of mass 100 g is struck by a tennis racket. The velocity of the ball is changed as shown.
What is the magnitude of the change in momentum of the ball?

1 )
$1kgm{s^{ - 1}}$
$5kgm{s^{ - 1}}$
3 )
$1000kgm{s^{ - 1}}$
4 )
$5000kgm{s^{ - 1}}$
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