Question

plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz ans its urgent​

Answer 1

Answer:

Answer is 80m

Explanation:

U is Zero for free fall

Answer 2

Answer:

Explanation:bro..u can use the second law to calculate height

h =ut+1/2at^2

where u=0   and t =4 sec

substitute the value of g =10m/s^2

g=a

u will get ur answer