Answer:
a. 44 m
Explanation:
We don't have the table but we can still answer since the motion is a free-fall motion.
First of all, we calculate the velocity of the body at time t = 4 s, with the equation
[tex]u'=u+gt[/tex]
where
u = 0 is the initial velocity
g = 9.8 m/s^2 is the acceleration of gravity (we take downward as positive direction)
t is the time
Using t = 4 s,
[tex]u'=0+(9.8)(4)=39.2 m/s[/tex]
Now we can calculate the distance covered during the time t = 4 s and t = 5 s using the other suvat equation
[tex]s=u'\Delta t+\frac{1}{2}g\Delta t^2[/tex]
where
[tex]\Delta t = 5-4=1s[/tex] is the time interval we are considering. Substituting values,
[tex]s=(39.2)(1)+\frac{1}{2}(9.8)(1)^2=44 m[/tex]
