Question

Your brother's mass is 40.0 kg, and he has a 1.30 kg skateboard. What is the combined momentum of your brother
and his skateboard if they are going 8.50 m/s?

Answer 1

Answer:

351.05 kg * m/s

Explanation:

Combined momentum is denoted with this formula:

• p = m₁v₁ + m₂v₂

In other words, the combined momentum of two masses is the sum of their masses multiplied by their velocity.

Let m₁v₁ represent the brother's mass and velocity, and let m₂v₂ represent the skateboard's velocity.

List out the known variables:

• m₁ = 40.0 kg
• v₁ = 8.50 m/s
• m₂ = 1.30 kg
• v₂ = 8.50 m/s

Substitute the known values into the equation.

• p = (40.0)(8.50) + (1.30)(8.50)  
• p = 340 + 11.05
• p = 351.05

The combined momentum of the brother and his skateboard is 351.05 kg * m/s.