Sunday

March 1, 2015

March 1, 2015

Posted by **Jessica** on Tuesday, February 7, 2012 at 8:25pm.

a) 0.6 sec

b) 1.2 sec

c) 1.8 sec

d) 2.4 sec

Please explain how you find the answer!!! I cannot figure it out

- Science -
**bobpursley**, Tuesday, February 7, 2012 at 8:27pmspeed at the top is zero.

Vf=vi-9.8t

0=12-9.8t

t= about ...

- Science -
**Jessica**, Tuesday, February 7, 2012 at 8:30pmI learned the formula to be v=gt...why are you subtracting?

Also what is vf and vi?

- Science -
**bobpursley**, Tuesday, February 7, 2012 at 8:36pmvf= final velocity, which is zero at the top.

vi is initial velocity.

**Answer this Question**

**Related Questions**

Math: Word Problem - A ball is thrown upward from the top of a building which is...

Algebra 2 - If an object is thrown vertically upward with an initial velocity of...

Algebra - If an object is thrown vertically upward with an initial velocity of ...

Physics/Calc - A ball is thrown vertically upward from a cliff with a speed of ...

Physics/Calc - A ball is thrown vertically upward from a cliff with a speed of ...

physics - A ball is thrown vertically up from the edge of a 150 m building with ...

physics - A ball is thrown vertically upward with a velocity of 100m/s.It will ...

physics - A ball is thrown upward from the top of a 27.0-m-tall building. The ...

Physics - A ball is thrown vertically upward with a speed of 1.53 m/s from a ...

math,help.algebra - I am stuck form this point i need help. the problem states: ...