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

sss (side, side, side)

sas (side, angle, side)

asa (angle, side, angle)

aas (angle, angle, side)

hl (hypotenuse, leg)

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5