Respuesta :
Answer:
The total momentum of the cat and the dog is, p = 2.4 kg m/s
Explanation:
Given,
The mass of the cat, m = 800 g
= 0.800 kg
The mass of the dog, M = 1000 g
= 1 kg
The velocity of the cat taken positive x direction, v = 8 m/s
The velocity of the dog, V = - 4 m/s
The momentum of the body is defined as the product of its mass and velocity.
p = mv
The momentum of the cat,
p₁ = 0.8 x 8
= 6.4 kg m/s
The momentum of the dog,
p₂ = MV
= 1 x -4
= -4 kg m/s
The total momentum,
p = p₁ + p₂
= 6.4 + (-4)
= 2.4 kg m/s
Hence, the total momentum of the cat and the dog is, p = 2.4 kg m/s
