Question

Trinity and a penguin get into an argument. The penguin gets angry and attacks her. Its mass is 5 kg and slides at 8 m/s, and Trinity is 40 kg and at rest. They collide and bounce apart. After the collision, the penguin is moving at 0 m/s. How fast is Trinity moving after the collision?

Answer 1

velocity of Trinity = 1m/s

Step-by-step explanation:

Conservation of Momentum equation

m1u1+m2u2=m1v1+m2v2.

m1 = mass of penguin

u1 = initial velocity of penguin

v1 = final velocity of the penguin

m2 = mass of Trinity

u2 = initial velocity of Trinity

v2 = final velocity of trinity

5kg • 8m/s + 40kg • 0m/s = 5kg • 0m/s + 40kg • v2

40kg•m/s = 40kg • v2

divide each side by 40kg

1m/s = v2