Question

What is the change in the momentum of a 1,600 kg car if its velocity goes
from 20 m/s to 0 m/s?

Answer 1

To calculate the change in momentum for a 1,600 kg car that goes from 20 m/s to 0 m/s, use the momentum change formula, resulting in a change in momentum of -32,000 kg m/s.

Step-by-step explanation:

The question asks about the change in momentum of a car that decreases its velocity from 20 m/s to 0 m/s.

To find this change in momentum, we can use the formula
`\triangle p = m(v_f - v_i)`, where Δp is the change in momentum, m is the mass of the car,
`v_f` is the final velocity, and
`v_i` is the initial velocity.

In this case, the car has a mass of 1,600 kg, an initial velocity of 20 m/s, and a final velocity of 0 m/s.

Plugging in these values, we get Δp = 1,600 kg x (0 m/s - 20 m/s)

= -32,000 kg m/s.

The negative sign indicates that the momentum has decreased.