A500 g model train car traveling at 0.8 m/s collides with a 300 g stationary car. the cars hook up and move off down the track together. how fast are they going? ( also how do i do it )

0.5 m/s

Step-by-step explanation:

A 500 g model train car traveling at 0.8 m/s collides with a 300 g stationary car.

Initial velocity of train,

Initial velocity of car,

Mass of train,

Mass of car,

The cars hook up and move off down the track together.

Let the final velocity of car and train,

Using conservation of momentum,

Momentum before collision = Momentum after collision

Hence, After collision they will going with 0.5 m/s

step-by-step explanation:

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!