4. Indicate which of the following has the greatest momentum: a 500 kg car
moving at 64 km/h, a 250 kg cart moving at 128 km/h, or a 1,000 kg truck
moving at 32 km/h. Explain your answer

Answer:Explanation:Given:m₁ = 500 kgv₁ = 64 km/h m₂ = 250 kgv₂ = 128 km/h m₃ = 1000 kgv₃ = 32 km/h _____________p max - ?Nomtice, that:m₂ = 250 kg;m₁ = 500 kg =  2·m₂; m₃ = 1 000 kg =  4·m₂v₂ = 128 km/h;v₁ = 64 km/h = v₂ / 2; v₃ = 32 km/h = v₂ / 4;Impulsesp₁ = m₁·v₁ = 2·m₂ · (v₂/2) = m₂·v₂p₂ = m₂v₂ p₃ = m₃v₃ = 4m₂·(v₂/4) = m₂v₂p₁ = p₂ = p₃The impulses are the same!