Question

The combined mass of a boy and his skateboard is 40 kg. The boy rides his skateboard at a velocity of 3.0 m/s. What is the boy’s momentum?

Answer 1

The momentum of the boy and his skateboard, combining a mass of 40 kg with a velocity of 3.0 m/s, is calculated using the formula p = m × v, resulting in 120 kg·m/s.

Step-by-step explanation:

The student's question relates to the concept of momentum in physics, which is a measure of the mass of an object times its velocity. To find the boy's momentum, we use the formula:

p = m × v

Where:

p is the momentum

m is the mass

v is the velocity

Given:

The combined mass of the boy and his skateboard (m) is 40 kg

The velocity (v) at which the boy and the skateboard are moving is 3.0 m/s

Using the formula, we calculate the momentum as follows:

p = 40 kg × 3.0 m/s

= 120 kg·m/s

Therefore, the momentum of the boy and his skateboard is 120 kg·m/s.