Which of the bodies has the greatest impulse: a mass of 400 g, flying at a speed of 500 m / s
Which of the bodies has the greatest impulse: a mass of 400 g, flying at a speed of 500 m / s or a mass of 50 kg, flying at a speed of 40 m / s?
Given:
m1 = 400 grams = 0.4 kilograms – the mass of the first body;
v1 = 500 meters per second – the speed of the first body;
m2 = 50 kilograms – the mass of the second body;
v2 = 40 meters per second – the speed of the second body.
It is required to compare the impulses of bodies P1 and P2 (kg * m / s).
Let’s find the momentum of the first body:
P1 = m1 * v1 = 0.4 * 500 = 4 * 50 = 200 kg * m / s.
Let’s find the momentum of the second body:
P2 = m2 * v2 = 50 * 40 = 2000 kg * m / s.
Since P2> P1, the momentum of the second body is greater.
Answer: the impulse of the second body (weighing 50 kg) is greater than the impulse of the first body.