A mass of 1 kg is thrown up with a velocity of 100 ms. After 5 seconds, it explodes into two parts. One-part of mass 400 g comes down with a velocity 25 ms. The velocity of other part is (Take g=10ms…

Question

A mass of 1 kg is thrown up with a velocity of 100 ms. After 5 seconds, it explodes into two parts. One-part of mass 400 g comes down with a velocity 25 ms. The velocity of other part is (Take g=10ms^-2 )

Accepted Answer

Correct answer: C. (c): Velocity after 5 sec ,v=u- gt=100-10 5=50m/s By conservation of momentum 1 50=0.4 (-25 )+0.6 v^ ' 60=0.6 v^ '=v^ '=100m/s upwards

$A mass of 1 kg is thrown up with a velocity of 100 \frac{m}{s} . After 5 seconds, it explodes into two parts. One-part of mass 400 g comes down with a velocity 25 \frac{m}{s} . The velocity of other part is (Take g = 10 m s^{- 2})$

Solution

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