A cart with a mass of 3 kg, moving at a speed of 4 m / s, collides with a stationary cart of the same mass and clings to it.
| December 3, 2020 | education
A cart with a mass of 3 kg, moving at a speed of 4 m / s, collides with a stationary cart of the same mass and clings to it. What is the momentum of the carts after interaction.
Given:
m1 = m2 = 3 kg
v = 4 m / s
Find: p -?
Decision:
mv1 = (m1 + m2) * v2
v2 = mv1 / (m1 + m2)
v2 = 12/6 = 2 m / s
p = (m1 + m2) * v2 = 6 * 2 = 12 kg * m / s
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