Question
Estimate the average speed of the apollo spacecaft in m/s, given that the craft took five days to reach the moon from eaeth .the moon is 3.8*10 to the power 8m from earth.
Answers
bobpursley
ESTIMATE
distance=400M m
time=5*24=120hrs*3600sec/hr=about 3.6*.12 sec=about .42E6sec
so speedabout=900m/s
about means I rounded and calculated in my head. It is an estimate.
Now more accurately
speed=380E6/(5day*24hr/day*3600sec/hr)
speed=380E6/(5*24*3600)=880 m/s
distance=400M m
time=5*24=120hrs*3600sec/hr=about 3.6*.12 sec=about .42E6sec
so speedabout=900m/s
about means I rounded and calculated in my head. It is an estimate.
Now more accurately
speed=380E6/(5day*24hr/day*3600sec/hr)
speed=380E6/(5*24*3600)=880 m/s