Question

A 10 kg puck initially moving at 20 m/s has a perfectly inelastic collision with a 20 kg puck. a. Will the resulting velocity be greater than, less than, or equal to 10m/s

Answer 1

Answer:

Equal to

Explanation:

with a totally inelastic collision masses combine and velocity is the same.

p initial =p final

p=mv

10kg(20m/s)=20kg(v)

200kg m/s=20kg(v)

v=10m/s

Answer 2

The resulting velocity obtained is less than 10m/s.

We have the following information;

Mass of the first puck = 10 kg

velocity of the first puck = 20 m/s

Mass of the second puck = 20 kg

common velocity = ?

From the law of conservation of linear momentum;

[(10 kg  × 20 m/s) + (20 kg × 0 m/s)] = (10 kg + 20 kg) v

200 + 0 = 30v

v = 200/30

v = 6.67 m/s

Hence, the resulting velocity obtained is less than 10m/s.

Learn more about conservation of linear momentum: https://brainly.com/question/2141713