Question

CHECKPOINT
1. Calculate the momentum in each of these examples:
(a) an ice skater with a mass of 64 kg glides at 3.75 m s−1
(b) a rugby player of mass 120 kg runs at a speed of 4.9 m s−1
(c) an ant of mass 5 milligrams moves at a speed of 5
centimetres per second.

Answer 1

Answer

A) momentum is given by

$P=mv=64\times3.75=240$ kg-m/sec

B) $P=120\times4.9=5.88$ Kg-m/sec

C) momentum is

$P=5\times10^{-3}\times5\times10^{-2}\\=25\times10^{-5}Kg-m/sec$