Question

A Student is investigating the inertia of several objects. she recorded her data in a table.
object: w,x,y,z.
mass(kg):6.5,3.0,11.5,5.0. speed(m/s):18.0,15.0,9.0,6.0

what object has the greatest inertia?

A)Z
B)W
C)X
D)Y

Answer 1

The formula for inertia is mass multiplied by speed.

For object W: Inertia = 6.5 kg * 18 m/s = 117 kg*m/s
For object X: Inertia = 3.0 kg * 15 m/s = 45 kg*m/s
For object Y: Inertia = 11.5 kg * 9 m/s = 103.5 kg*m/s
For object Z: Inertia = 5.0 kg * 6 m/s = 30 kg*m/s

Therefore, object W has the greatest inertia with 117 kg*m/s.

So the answer is:

B) W