Carts P ( ) and Q ( ) collide on a frictionless track

PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

Carts P (0.50 kg0.50\,\text{kg}) and Q (1.0 kg1.0\,\text{kg}) collide on a frictionless track. Cart P is moving toward Q; cart Q is initially at rest. After the collision the two carts stick together and move with a common speed of 2.0 m s−12.0\,\text{m}\,\text{s}^{-1}. Calculate the initial speed of cart P. (a) 4.0 m s−14.0\,\text{m s}^{-1} (b) 6.0 m s−16.0\,\text{m s}^{-1} (c) 3.5 m s−13.5\,\text{m s}^{-1} (d) 9.0 m s−19.0\,\text{m s}^{-1}

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