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July 29, 2014

July 29, 2014

Posted by **Pat** on Saturday, January 15, 2011 at 6:45pm.

with h+vt-4.9^2

50 meters high

30 meters per sec.

what is height after 2 sec.

- algebra -
**Marth**, Saturday, January 15, 2011 at 8:16pmPlug the values in.

h = 50m

t = 2s

v = 30m/s

h+vt+4.9*t^2=?

- algebra -
**Damon**, Saturday, January 15, 2011 at 8:18pmh+vt-4.9 t^2 (typo)

from

h = Ho + Vo t + (1/2) a t^2

where a = gravity = 9.8 m/s^2

Ho, initial height = 50m

Vo = initial velocity up = 30

so

50 + 30 (2) - 4.9 (4)

= 110 - about 20 = about 90

you use your calculator

- algebra typo -
**Damon**, Saturday, January 15, 2011 at 8:19pmtypo a = -9.8m/s^2

(down)

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