Question

Please Help sorry for all these questions

Answer 1

Remember your units

\[\frac{ kg \times m }{ s} \leftarrow \rightarrow N \times s \]

Either one works

Answer 2

I prefer the left

Answer 3

Which one are you having trouble with?

Answer 4

The ones that say " what is the velocity of .... "

Answer 5

Do you know what "elastic" means?

Answer 6

In this case

Answer 7

the object(s) in contact temporarily change shape or something like that

Answer 8

The key thing to remember about elastic collisions is that KE (Kinetic Energy) is conserved.

Answer 9

Therefore you can use conservation of energy

Answer 10

Do you remember the formula for KE?

Answer 11

Ke = 1/2 mv^2 = kg * m^2/s^2= J

Answer 12

\[KE = \frac{ 1 }{ 2 }mv^2\]

Correct. Now we need to see about our variables. What do we know about the mass of the two balls?

Answer 13

one mass is abit more than half of the other

Answer 14

Where does it say that?

Answer 15

which question are you talking about?

Answer 16

Lol yeah, was looking at the 1/ms one, mb.

For this one though, you do the same principle that you applied to the previous problem. Do you know what to do?

Answer 17

not really :P

Answer 18

Conversation of Energy in these cases looks like this:

\[KE = KE\]

\[\frac{ 1 }{ 2 }mv^2 = \frac{ 1 }{ 2 }mv^2 \]

Answer 19

Input your variables, and solve.

Answer 20

Ok thank you @Shadow

Answer 21

I have to go now. I'll be back on in around 7 hours if you need further help.

Answer 22

OK thanks @Shadow

Answer 23

My thing got cancelled. You still on?