Question

A car with mass 1137 kg, moving at 17 m / s, strikes a(n) 2540 kg car at rest. If the two cars stick together, with what speed do they move?

Answer 1

elastic collision? hey, this is physics question, why do you post here?

Answer 2

didnt know this wasnt for physics . oops

Answer 3

but I know @IDKwut knows how to solve, let him help

Answer 4

where is he???

Answer 5

m1 v1 = m1 V1 + m2 V2 = (m1 + m2) V
Plug and solve for V.

Answer 6

yup and v2 =0 so that it 's easy to solve, right?

Answer 7

in not to sure what to plug in where, this is new to me

Answer 8

O. I'll give you another hint:
V = m1/(m1 + m2) v1
Where m1 = mass 1, m2 = mass 2 and v1 = final velocity. Try it out. :D

Answer 9

is the answer 0.007087

Answer 10

Please tell me how you got that.

Answer 11

m1-1137 m2-17 v1-2540

Answer 12

17 is not the second mass...

Answer 13

2540?

Answer 14

Well, that's a given since it is in your question post. m1 = 1137, m2 = 2540, and velocity is measured in m/s which is 17 m/s, now plug into the formula I gave you. :)

Answer 15

thank you so much.

Answer 16

43197 is the answer?

Answer 17

Tell me how you got that now. I want to see how you work the problem out.

Answer 18

\[V = \frac{ m1 }{ (m1+m2) } \times v1\] Order of operations? Shouldn't it be \[V = \frac{ m1 \times v1 }{ (m1 + m2)}\]

Answer 19

Follow order of operations do not multiply the bottom and divide

Answer 20

Don't give her/him the answer. It's pretty simple work to do.

Answer 21

They are the same thing as long as you follow the operations

Answer 22

Was not going to

Answer 23

Re-stated the formula that was given above and gave a guideline of how order of operations matters here especially if they are plugging numbers into a calculator

Answer 24

5.257

Answer 25

Good job! :)

Answer 26

thank you

Answer 27

are you able to help with this one
A(n) 1090 N man stands in the middle of
a frozen pond of radius 6
.
09 m. He is un-
able to get to the other side because of a
lack of friction between his shoes and the
ice. To overcome this difficulty, he throws his
1
.
05 kg physics textbook horizontally toward
the north shore, at a speed of 4
.
53 m
/
s.
How long does it take him to reach the
south shore?