Answer:
6.49 m/s
Step-by-step explanation:
shariquekhan25ow696t did a great job of explaining but made a small mistake;
This is the same type of problem
find out the time value
3 = 1/2*a*T^2
6/10 = t^2
t = 0.77 seconds
and the distance is given 5 m
thus speed ,= distance/time
speed = 5/0.77
= 6.49 m/s