4. How the equations of motion will change for a freely falling body?
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A freely falling body always experience a downward acceleration g which we call as acceleration due to gravity.
Thus acceleration of freely falling body a=g=9.8 m/s^2
Taking downward direction to be positive
Initial speed of that body u=0
Equation of motion will be
v=gt
s=1/2gt^2
v^2=2gs
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