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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
 2 years ago
 2 years 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
 2 years ago
 2 years ago

This Question is Open

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

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

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

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

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

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

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