A 9 kg ball moving at 5 m/s collides and sticks to a second ball with a mass of 5 kg. If the two balls after collision stick together, what will be the velocity of the two balls
Fuel of mass 13000 kg rush out at a speed of 2400 m/s after burning. The rocket of mass 39000 kg as a result move upwards. Find the velocity of the rocket
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