Asked by Angie
Two trains approach one another. Train A has a mass of 500,00 kg and is moving at 34.0 m/s. Train B has a mass of 350,00 kg and is moving at 42 m/s. They collide and stick together. What is the velocity and direction of the combined masses
Answers
Answered by
Damon
A has a mass of 500,00 (I assume you mean 500,000)
A moves east, positive direction
B moved west, negative
Initial momentum east
= 500, 000 *34 - 350,000 * 42
= 170*10^5 - 147*10^5 = 23*10^5
that will be the final too
final mass = 5+3.5 = 8.5*10^5
so
8.5*10^5 V = 23*10^5
V = + 2.71 east
A moves east, positive direction
B moved west, negative
Initial momentum east
= 500, 000 *34 - 350,000 * 42
= 170*10^5 - 147*10^5 = 23*10^5
that will be the final too
final mass = 5+3.5 = 8.5*10^5
so
8.5*10^5 V = 23*10^5
V = + 2.71 east
Answered by
Angie
what about a 5,000 kg truck rear-ends a 1200 kg car that has been traveling at 13 m/s, causing the truck to slow down and the car to speed up. What is the final velocity?
Answered by
Angie
Final velocity of the car that is
Answered by
Damon
I do not know.
Questions:
initial velocity of truck?
do they stick together?
Questions:
initial velocity of truck?
do they stick together?
Answered by
bobpursley
angie, post your own questions, hanging on the tail of other questions wont work.
wondering which one has been traveling at 13m/s? One can't assume conservation of energy here.
wondering which one has been traveling at 13m/s? One can't assume conservation of energy here.
Answered by
Angie
reposted- sorry for the confusion and thanks of the help
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