finding velocity in a tricky probelm?

Question

when all the info i have is amount Kinetic energy and the momemtum of the object

i know that KE=1/2m*v^2
but i don't have the mass. boo.

Ke=158j
Momentum=41.3

Answer 1

Since as you have said
Ke=(1/2)m v^2
and
P=mv ip is known then
m=P/v

and Ke=1/2(P/v) v^2 and in terms of momentum
Ke= (1/2)P v then

v= 2Ke/P