- #1
ghostbuster25
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This is a revision question for a test I've got. Just want to check my answer.
An asteroid with mass of 1.8*1015kg and radius of 6.7km attracts a spacecraft that has come into its gravitational influence. What speed will the spcaecraft crash into the surface. intial speed of spacecraft is negilable.
its a multiply choice and i choose it is impossible to calculate without knowing the mass of the spacecraft .
the equation i would have used is -Gm1m2/r
this right? or is there a way of working out the speed without knowing the mass?
thanks
An asteroid with mass of 1.8*1015kg and radius of 6.7km attracts a spacecraft that has come into its gravitational influence. What speed will the spcaecraft crash into the surface. intial speed of spacecraft is negilable.
its a multiply choice and i choose it is impossible to calculate without knowing the mass of the spacecraft .
the equation i would have used is -Gm1m2/r
this right? or is there a way of working out the speed without knowing the mass?
thanks