Question

During a snowball fight two balls with masses of 0.4 and 0.6 kg, respectively, are thrown in such a manner that they meet head-on and combine to form a single mass. The magnitude of initial velocity for each is 15 m/s. What is the speed of the 1.0-kg mass immediately after collision?

Answer 1

Answer:

the speed of the snow ball after collision is equal to 3 m/s

Explanation:

given,

mass of the two balls

m₁ = 0.4 Kg

m₂ = 0.6 Kg

initial velocity of each ball = v₁ = 15 m/s

Speed of 1 Kg mass after collision = ?

using conservation of momentum

m₁ v₁ - m₂ v₁ = (m₁+m₂) V

negative velocity shows that second ball is moving in opposite direction.

0.4 x 15 - 0.6 x 15 = (1) V

V = - 3 m/s

Hence,

the speed of the snow ball after collision is equal to 3 m/s