Answer:
A. 0.32s
Explanation:
Lets find the initial velocity of the vertical component
Cos23=u/4
4cos23=1.6m/s
then time, t =2u/g
2×1.6/9.8
=0.32seconds
Answer:
A. 0.32 s
Explanation:
The other answer did the math wrong but came up with the same answer. Anyway, you're supposed to use sin.
4sin(23) gives you 1.56 or 1.6
-1.56/-9.8 (negative because gravity is working against the direction of of the athlete as he goes into the air) = 0.159...
0.159*2 = 0.318
Round: 0.32
