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In this problem, you will use kinematic equations applied to a flea in free fall. Take the magnitude of free-fall acceleration to be g = 9.80 m/s^2.

**If a flea can jump straight up to a height of 0.550 m, what is its initial speed v_0 as it leaves the ground?**

My answer was 3.28 m/s, which is correct.

**How long is the flea in the air?**

I don't know which equations to use.

to reach it's max height, I used: t=d/v and got 0.168s

to reach the ground, I used: y1 = -0.5gt^2 and got 0.335s

so the total time I calculate was 0.503s

Can somebody help me?

Thanks