Question

Popeye, of mass 75.0 kg, has just downed a can of spinach. He accelerates quickly and stops Bluto, of mass 720 kg (Bluto is very dense), who is charging in at 15.0 m/s. What was Popeye's speed

Answer 1

Answer:

Popeye's speed is 144 m/s.

Explanation:

Given;

mass of Popeye, m₁ = 75 kg

mass of Bluto, m₂ = 720 kg

velocity of Bluto, v₂ = 15 m/a

velocity of Popeye, v₁ = ?

Apply the principle of conservation of linear momentum;

m₁v₁ = m₂v₂

v₁ = (m₂v₂) / m₁

$v_1 = \frac{720\ \times \ 15}{75} \\\\v_1 = 144 \ m/s$

Therefore, Popeye's speed is 144 m/s.