Answer:
The speed of these two sea creatures just after their collision is 5.55 m/s.
Explanation:
Given;
mass of the whale, m₁ = 1235 kg
initial speed of the whale, u₁ = 6.4 m/s
mass of the seal, m₂ = 189 kg
initial speed of the seal, u₂ = 0
let their final speed after collision, = v
Apply the principle of conservation of linear momentum;
m₁u₁ + m₂u₂ = v(m₁ + m₂)
(1235 x 6.4) + (189 x 0) = v(1235 + 189)
7904 = 1424v
v = 7904 / 1424
v = 5.55 m/s
Therefore, the speed of these two sea creatures just after their collision is 5.55 m/s.
