Astone is allow to fall from the top of a tower 100 m height and at the same time another stone is
projected vertically upward from the ground with a velocity of 25 m/s when and where both stones
meet? calculate. g = 10 m/s2
[ans: t = 4 sec.]
[from above h = 80 m, from ground h = 20 m)

3 is greater then both of those numbers

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

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