Question

A plane is traveling at 300 m/s drops a bomb which hits it target 10 sec later. How high was the plane flying?

Answer 1

S=Ut+1/2at²
S=0×10+0.5×9.8×10²
S=0+4.9×100
S=490m

Answer 2

How was 9.8 gotten

Answer 3

9.8 is a constant. It's d value of gravity