Question

A ball of mass 1 kg strikes a rigid wall with speed 2 m/s and gets reflected without any loss of speed as
shown. The magnitude of impulse is
ITTTTTTTTTT
(2) 1 kg m/s
(4) Zero
(1) 2 kg m/s
(3) 4 kg m/S

Answer 1

Ball strike so change in moments 2mv so we get 4