Question

body of mass hundred grams moving with an initial velocity of 4 metre per second collides with another body of mass 150 gram moving in opposite direction with velocity 6 metre per second the collision is perfectly inelastic then after the collisionlrove that the two bodies combine and move witha velocity 2 meter per sec in the initial direction of heavier body please answer very fast​

Answer 1

Answer:

PHYSICS

A body of mass 2 kg moving with a velocity 3 m/s collides with a body of mass 1 kg moving with a velocity of 4 m/s in opposite direction. If the collision is head on an completely inelastic, then :

This question has multiple correct options

November 22, 2019avatar

Mano Hamid

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ANSWER

Given : m

1

=2kg m

2

=1kg u

1

=3 m/s u

2

=4 m/s

Let the common velocity of the combined body be V

Mass of combined body M=2+1=3kg

Applying conservation of momentum :

2×3−1×4=3×V ⟹V=

3

2

m/s

Momentum of the system P=2×3−1×4=2 kg m/s

Loss in kinetic energy of the system due to collision ΔK.E=K.E

i

−K.E

f

ΔK.E=

2

1

(2)×3

2

+

2

1

(1)×4

2

−

2

1

(3)×(

3

2

)

2

⟹ΔK.E=

3

49

J

Explanation:

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