What height will your cousin reach if thrown at 5 m/s?

[billybobay]

Homework Statement

If you toss your little cousin straight up into the air at 5 m/s, how high above your hands will he/she go?


0.5 m

1.3 m

2.0 m

70 m

Homework Equations

d = (0-5^2) / 2 (-9.8)
d = 1.3 m

The Attempt at a Solution

My cousin will fly 1.3 m high if I throw her at 5 m/s.

Is that correct?

 

[PotentialE]

Distance = ??
Tine = ??
Velocity initial=5m/s
Velocity final = 0m/s
Acceleration = -9.8m/s

T = Vf-Vi / A
T = -5 / -9.8
T = .51s

D = ViT + AT^2 / 2
D = (5)(.51) + ((-9.8)(.51)(.51) / 2)
D = 1.3

yes 1.3 is correct