- #1
talknerdy2me
- 5
- 1
Homework Statement
The kinetic energy of a 20N object is 5.00 x 10^2 J. What is the speed?
Homework Equations
Ek= 1/2 mv^2
and *i think*
F=mg
The Attempt at a Solution
F=mg
m=F/g
m=20N/9.81 m/s^2
m= 2.038 kg Ek= 1/2 mv^2
v=sq. root 2Ek/m
v=sq. root 2(5.00 x 10^2 J)/2.038 kg
v= 490 m/sIs this correct or do i need Jesus? lol