Question

Please help guys lol I have no clue how to do this... it’s the square root method?

Answer 1

2 seconds.

Explanation:

s=16t² -- (1)

s=64. (given)

Put value of s in (1)

64=16t²

16t²=64

t²=64/16

t²=4

t=√4

t=2 seconds.

Hope this helps :-)