A boy and his skateboard have a combined mass of 65 kg what is the speed of the boy and skateboard if they have a momentum of 27

Question

Karo-lina-s [1.5K]

3 years ago

15

A boy and his skateboard have a combined mass of 65 kg what is the speed of the boy and skateboard if they have a momentum of 27

5 kg•m/s

Physics

1 answer:

kvasek [131] · Answer 1 · 2022-01-05T22:21:17+03:00

kvasek [131]3 years ago

3 0

Let m = 65 kg, the mass of the boy and skateboard.
Let v = speed of the boy and skateboard.

The momentum is
P = mv = (65 kg)*(v m/s) = 275 (kg-m)/s²
v = 275/65 = 4.23 m/s

Answer: 4.23 m/s