Answer:
489.5 m, 20s
Step-by-step explanation:
s= vot - 1/2 gt2 1st equation
vf=vo-gt 2nd equation
If it reach the peak its velocity is 0 (vf),
Know that g (gravity) is 9.81m/s2
Substituting it to 2nd eq
0=98-9.81t
t=98/9.81
t=10
Substituting to 1st equation
s=98(10)-1/2 (9.81)(10)^2
s or the height it reach =489.5m
The time to go up is 10s and same 10s to go down, so 10+10 =20s
#CarryOnLearning
