Question

A ball 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?

Answer 1

7 m/s

Step-by-step explanation:

Answer 2

Δv = 7 m/s

Step-by-step explanation:

Delta (Δ) is a letter of the Greek alphabet. It is the fourth letter of the Greek alphabet. It is used in the fields of mathematics and sciences. It is used to denote the difference between a final quantity and initial quantity. v is generally the notation of velocity. So, Δv would be the change in velocity.

Δv = Final velocity - Initial velocity

⇒Δv = 9 - 2

⇒Δv = 7 m/s