Emma52658 Emma52658

03-08-2016
Physics

contestada

a railroad car with a mass of 30,000 kg is moving at 2.0 m/s when it runs into an at-rest freight car with an equal mass. the cara lock together. what is their final velocity?
A. 2.0 m/s
B. 0.5 m/s
C. 60,000 kg-m/s
D. 1.0 m/s

Respuesta :

Distasion Distasion

03-08-2016

D. It is the same energy but now pushing twice as much, so it would be half as fast so 1 m/s

Answer Link

Otras preguntas

Melody wants to buy a present for her friend for her birthday. She wants to purchase a CD that costs $18. She thought she had $20 in her bank account, but she r

He loves me active to passive

Sue likes to run. One day she was running for 3 hours with an average speed of 7 miles per hour. How many miles did she run that day?

Help pleaseeeee. Tyyy

I know the answer to this, but how would you solve it? What relationships would you use?

Can someone help me find the domain and range of this graph

i need help please

Which type of engineering design uses an already existing design?A. top-down designB. spiral designC. bottom-up designD.incremental design

Given the following reaction and data, A + B → Products Experiment A (M) B (M) Rate (M/s) 1 1.50 1.50 0.320 2 1.50 2.50 0.320 3 3.00 1.50 0.640 Required: a.

Please answer my question