Question

Question #32c47

Answer 1

2

Explanation:

Here we will consult:
Y=y(0)+v(0)t+1/2*at^2

I assume that it is thrown at ground level at 90dec with no air resistance.

0=0+9.8t+1/2(-9.8)t^2
0=4.9t(2-t)
T=2s