jennyhoang2654 jennyhoang2654

23-01-2018
Physics

contestada

A moving object has a kinetic energy of 130 j and a momentum of 27.4 kg·m/s.
a.find the speed of the object. answer in units of m/s.

Respuesta :

HenryLCH HenryLCH

23-01-2018

(mv^2)/2=130
m=260/v^2---------------(1)
p=mv
mv=27.4------------------(2)
sub (1) into (2):
(260/v^2)*v=27.4
v=9.49ms^-1(correct to 3 significant figures)

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