NEET Class neet Answered
3000 kg car is travelling at 20 m per second when it coorides with a stationary car of March 2000 kg if they stick together after the collision what is their final velocity
Asked by aniket30092005 | 01 Aug, 2023, 08:54: PM
Expert Answer
After the collision , if two cars are stucked together , Then the collision is perfectly inelastic.
In a perfectly inelastic collision, only momentum is conserved .
Initial momentum before collision = mass × velocity = 3000 × 20 kg m/s = 60000 kg m/s
After collision , combined mass M = ( 3000 + 2000 ) kg = 5000 kg
speed after collision = momentum / mass = 60000 / 5000 = 12 m/s
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