- #1
missrikku
Hello again!
I am having trouble with the following linear momentum problem:
A has a mass mA = 9.11x10^31 kg
B has a mass mB = 1.67x10^-27 kg
They are attracted to each other by some electrical force.
Say they are released from rest with a distance between them of Di = 3.0x10^-6 m
When their distance is decreased to D = 1.0x10^-6 m, what is the ratio of
a) their linear momentums
b) speeds
c) kinetic energies
-----
i know:
p = mv
so for a)
I am looking for: Pe/Pp
mAvA/mBvB
I have mA and mB, but not vA or vB
I know that they are released from rest, but how do you find vA and vB?
Can I use V^2 = Vi^2 + 2a(D-Di) ? If so, how do I find the a?
Thanks. I just need to be pointed in the right direction.
I am having trouble with the following linear momentum problem:
A has a mass mA = 9.11x10^31 kg
B has a mass mB = 1.67x10^-27 kg
They are attracted to each other by some electrical force.
Say they are released from rest with a distance between them of Di = 3.0x10^-6 m
When their distance is decreased to D = 1.0x10^-6 m, what is the ratio of
a) their linear momentums
b) speeds
c) kinetic energies
-----
i know:
p = mv
so for a)
I am looking for: Pe/Pp
mAvA/mBvB
I have mA and mB, but not vA or vB
I know that they are released from rest, but how do you find vA and vB?
Can I use V^2 = Vi^2 + 2a(D-Di) ? If so, how do I find the a?
Thanks. I just need to be pointed in the right direction.