- #1
ahrog
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Homework Statement
A 4.50 x 10^4 kg asteroid has 6.20 x 10^12 J of kinetic energy. What is the speed of that asteroid?
Homework Equations
W=Fd
P=W/T
P=Fv
The Attempt at a Solution
V=p/f
V=(6.2 x 10^12)/((4.50 x 10^4 kg)(9.8)
V=1.41 x 10^7 m/s
I am wondering about the gravity part though. Normally, for weight it is on earth, so 9.8 works. But if the asteroid is in space, then can I still use 9.8?