Two objects, each of mass 1.5 kg, are moving in the same straight line but in opposite directions. The velocity of each object is 2.5 m sl before the collision during which they stick together. What will be the velocity of the combined object after collision?
Answers
0 m s^-1 because there velocity will can cancel eachother.
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"Before collision, Mass of object 1 = 1.5 kg
Moving in opposite direction, before collision, Mass of object 2 moving = 1.5 kg
Before collision, Velocity of object 1 = 2.5 m/s
In opposite direction, Velocity of object 2 before collision = -2.5 m/s
After collision, both 1&2 objects stick to each other.
Therefore, the total mass of the combination = m_1 + m_2
= 1.5 + 1.5 = 3 kg
Let's assume that, the velocity becomes “v” after combination.
According to the conservation of momentum law,
After collision, the total momentum = Before collision, The total momentum
m_1 × v_1 + m_2 × v_2 = (m_1 + m_2) × v
(1.5 × 2.5) + (1.5 × (-2.5)) = 3 × v
3.75 - 3.75 = 3v
v = 0 m/s
Therefore, velocity of the objects after sticking is 0 m/s."