Question

A 2.5 kg ball is dropped onto a concrete
floor. It strikes the floor with a momentum
of 20 kg • m/s and bounces away from the
floor with a momentum of 16 kg • m/s.
What is the change of momentum of the
ball?
(A) 4 kg • m/s
(B) 8 kg • m/s
(C) 32 kg • m/s
(D) 36 kg • m/s
(E) 40 kg • m/s A 2.5 kg ball is dropped onto a concrete
floor. It strikes the floor with a momentum
of 20 kg • m/s and bounces away from the
floor with a momentum of 16 kg • m/s.
What is the change of momentum of the
ball?
(A) 4 kg • m/s
(B) 8 kg • m/s
(C) 32 kg • m/s
(D) 36 kg • m/s
(E) 40 kg • m/s @Physics

Answer 1

(A) 4 kg • m/s

Answer 2

(D) 36 Kg m/s

Answer 3

ans is 36

Answer 4

(D) 36 Kg m/s

Answer 5

change in momentum = finial momentum - intitial momentum

Answer 6

since it acts in opp direction

Answer 7

bcuz momentum is vector quantity u can not simply subtract them you have to be care ful with their vector directions