Question

In: Physics

You have one boxcar rolling into a string of three stationary boxcars. After interaction, they all...

You have one boxcar rolling into a string of three stationary boxcars. After interaction, they all couple together and move off to the right, heading for Chicago. Here are the specs:

Mass:

20,000 kg

All four boxcars have the same mass.

Initial conditions:

Boxcar 1 has velocity v1 = 8 m/sec, rightward

Other three are stationary, v2 = 0, v3 = 0, v4 = 0.

Final condition:

All four move off together as a combo

vcombo = ?

So.. what is the velocity of the combo unit, all four boxcars moving off together to the right, coupled together?

Image shows boxcars before collision…

a.8.00 m/sec

b.2.00 m/sec

c.6.67 m/sec

d.0.125 m/sec

Solutions

Expert Solution

genius_generous answered 2 years ago
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