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Annieb
Group Title
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
 one year ago
 one year ago
Annieb Group Title
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
 one year ago
 one year ago

This Question is Open

sauravshakya Group TitleBest ResponseYou've already chosen the best response.0
(A) 4 kg • m/s
 one year ago

kartiksriramk Group TitleBest ResponseYou've already chosen the best response.0
(D) 36 Kg m/s
 one year ago

akhil009 Group TitleBest ResponseYou've already chosen the best response.1
ans is 36
 one year ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.1
(D) 36 Kg m/s
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.0
change in momentum = finial momentum  intitial momentum
 one year ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.1
since it acts in opp direction
 one year ago

akhil009 Group TitleBest ResponseYou've already chosen the best response.1
bcuz momentum is vector quantity u can not simply subtract them you have to be care ful with their vector directionsdw:1344183447716:dw
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.0
I think question must specify that one is 20 and other is 16 since momentum is a vector quantity
 one year ago

akhil009 Group TitleBest ResponseYou've already chosen the best response.1
dw:1344183608654:dw
 one year ago

akhil009 Group TitleBest ResponseYou've already chosen the best response.1
@sauravshakya as he said ball is dropped and bounce so you can assume directions
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.0
oh ya....
 one year ago
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