1. The problem statement, all variables and given/known data 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? 2. Relevant equations W=Fd P=W/T P=Fv 3. 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?