A truck of mass 10 metric ton runs at 3 m s - 1 along a level track and collides with a loaded truck of mass 20 metric ton, standing at rest. If the trucks couple together, the common speed after the collision is

Question

A truck of mass 10 metric ton runs at 3 m s - 1 along a level track and collides with a loaded truck of mass 20 metric ton, standing at rest. If the trucks couple together, the common speed after the collision is, 1 m s - 1, 0.1 m s - 1, 0.5 m s - 1, 0.3 m s - 1

MARKS App · Accepted Answer

By the conservation of linear momentum v = m 1 u 1 + m 2 u 2 m 1 + m 2 v = 10 × 3 + 20 × 0 10 + 20 = 1 m s - 1

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