We know that the initial velocity is #0# #m/s#.Time taken to touch the ground is #5# #sec#. The acceleration due to gravity is #9.8# #m/s#. For easier calculation, lets assume it to be #10# #m/s#
We use the kinematic equation
#color(blue)(s=ut+1/2at^2#
Where,
#s# is the distance travelled (in metres), #u# is the initial velocity, #a# is the acceleration and #t# is the time taken
Plugin the values
#rarrs=ut+1/2at^2#
#rarrs=(0)(5)+1/2*10*5^2#
#rarrs=1/cancel2^1*cancel10^5*25#
#rarrs=5*25#
#color(green)(rArrs~~125# #color(green)(m#
Hope that helps!!!☺○☻
