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Lerok [7]
3 years ago
13

two cars collide head on. Car A has a mass of 1000 kg car B has a mass of 2000 kg. What is the speed of car B after the collisio

n?
Physics
1 answer:
leva [86]3 years ago
6 0

Explanation :

It is given that :

Mass of car A, m_A=1000\ Kg

Mass of car B, m_B=2000\ Kg

Let, the speed of car A and B after collision are v_A and v_B respectively and u_A and u_B be their initial velocities.

We know that in head on collision, momentum remains conserved.

so, m_Au_A+m_Bu_B=m_Av_A+m_Bv_B

so, v_B=\dfrac{m_Au_A+m_Bu_B-m_Av_A}{m_B}v_B=\dfrac{1000u_A+2000u_B-1000v_A}{2000}

so, v_B=u_A+2u_B-v_A

Hence, the speed of car B is v_B=u_A+2u_B-v_A

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