Question

What is the momentum of a 5.2-kg salmon swimming upstream with a speed of 2.3 m/s?

Answer 1

Momentum, p = 11.96 kg-m/s

Step-by-step explanation:

Given,

Mass, m = 5.2 kg

Speed, v = 2.3 m/s

To find,

The momentum of salmon

Solution,

Let p is the momentum of salmon. It is given by the product of mass and velocity. Its expressed is given by :

p = m × v

p = 5.2 kg × 2.3 m/s

p = 11.96 kg-m/s

So, the momentum of the salmon is 11.96 kg-m/s.

Answer 2

Momentum is the product of mass in kg and the velocity (m/s) of a body in motion. If a body is at rest then momentum is zero since the velocity is zero.
In this case, Momentum = mass × velocity
= 5.2 kg × 2.3 m/s
= 11.96 kgm/s
Therefore, the momentum of the salmon will be 11.96 kgm/s