Answer:
(d) -5.6 m/s in opposite direction
Theory:
From the conservation of momentum we know that the collision
between two objects will result in the conservation of initial
momentum and the final momentum i.e.,
Pi = Pf
Solution:
Given:
m₁ = 1.5 kg
u₁ = 11.2 m/s
m₂= 4.5 kg
u₂= 0
v₂= 5.6 m/s
To Find:
v₁= ?
Using momentum conservation
m₁ u₁ + m₂ u₂ = m₁ v₁ + m₂ v₂
substituting the values:
1.5 × 11.2 + 4.5 × 0 = 1.5 × v₁ + 4.5 × 5.6
16.8 + 0 = 1.5 × v₁ + 25.2
-8.4/ 1.5 = v₁
v₁ = - 5.6 m/s
Here, -ve sign shows that body is moving in the opposite
direction.
Hence, option (d) is correct.
Learn more about energy conservation here:
brainly.com/question/2807738
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