Question

june 2012
5.
which object has the greatest inertia?
(1) a 15 - kg mass traveling at 5.0 m/s
(2) a 10. - kg mass traveling at 10. m/s
(3) a 10. - kg mass traveling at 5.0 m/s
(4) a 5.0 - kg mass traveling at 15 m/s
7.

Explanation:

Step1: Recall the concept of inertia

Inertia is a property of matter that depends solely on mass. The greater the mass of an object, the greater its inertia.

Step2: Compare the masses of the objects

• Option (1): Mass \(m = 15\,\text{kg}\)
• Option (2): Mass \(m = 10\,\text{kg}\)
• Option (3): Mass \(m = 10\,\text{kg}\)
• Option (4): Mass \(m = 5.0\,\text{kg}\)

Answer:

1. a 15 - kg mass traveling at 5.0 m/s