Aball is rolling down a hill. at one point near the top of the hill, its velocity is 2 m/s. further down the hill, its velocity is 9 m/s. what is δv?

+7 m/s

Explanation:

(change in velocity) is defined as the difference between the final velocity and the initial velocity:

where:

is the final velocity

is the initial velocity

Substituting the numbers into the equation, we find

So, the ball has increased its velocity by 7 m/s.

multiple

answer: electrons