Saturday

December 20, 2014

December 20, 2014

Posted by **Anonymous** on Sunday, April 14, 2013 at 10:58pm.

- math -
**Reiny**, Sunday, April 14, 2013 at 11:39pmIf you know Calculus,

h ' (t) = -9.8t + 9.8 = 0 for a max of h

9.8t = 9.8

t = 1

h(1) = -4/9(1) + 9.8 + 1 = 5.9 m

If you don't know Calculus, complete the square

h(t) = -4.9 [t^2 - 2t +1 - 1 ] +1

= -4.9 [ (t-1)^2 - 1 ] + 1

= -4.9(t-1)^2 + 4.9 + 1

= -4.9(t-1)^2 + 5.9

so the vertex is (1,5.9) and the parabola opens downwards

So we have a maximum of 5.9 m when t = 1 sec

**Answer this Question**

**Related Questions**

Algebra 2 - A baseball player swings and hits a pop fly straight up in the air ...

Algebra - A baseball player hits a baseball into the air with an initial ...

Physics - 2) The baseball player throws a curve ball that reaches the catcher in...

algebra - in the past professional baseball was played at the astrodome in ...

physics - A baseball player hits the ball at a speed of 20.1 m/s and an angle of...

Pre Calc - 7. The Sandusky Little League uses a baseball throwing machine to ...

algebra 1 - Josh hit a baseball straight up into the air. The equation below ...

physics - as a baseball player strikes the ball with his batt the 1kg bat ...

Math - A batter hits a baseball straight up into the air. The height of the ball...

Physics - A baseball catcher puts on an exhibition by catching a 0.15-kg ball ...