Question

A skateboarder with a mass of 45 kilograms is riding on a skateboard with a mass of 2.5 kilograms. What should be the velocity of the skateboarder if she has to attain a momentum of 264 kilogram meters/second? A. 5.5 meters/secondB. 55.5 meters/secondC. 1.2 × 102 meters/second D. 1.2 × 103 meters/secondE. 1.2 × 104 meters/second

Answer 1

\[p=mv \rightarrow v=\frac{ p }{ m }=\frac{ p }{ m _{boy} +m _{skate} }=\frac{ 264kgms ^{-1} }{ 45kg+2.5kg }=5.56\frac{ m }{ s }\]