Posted by Natalie on Saturday, June 14, 2008 at 3:24pm.
I am trying to solve a problem using Newton's equation, which is (1/2)(9.8)t^2+ vot+ h. The problem says that a car rolls of a 120 foot high cliff. I know how to right the equation for this problem which would be (1/2)(9.8 m/s) t^2 + vot + 37m. I am trying to find out how high the car will befter 2 seconds.

math  Damon, Saturday, June 14, 2008 at 5:37pm
well, when it starts off the cliff it may have horizontal velocity but has no vertical velocity so Vo = 0
(1/2) * 9.8 = 4.9 so we might write that as
z = 4.9 t^2 + 0 + 37
so after two seconds we have:
z = 4.9 * 4 + 37
z = 3719.6
or 17.4 meters above ground
==================================
by the way, the vertical velocity would be:
V = Vo  4.9 t
V = 0  9.8
or 9.8 meters per second down
The horizontal velocity would be whatever horizontal velocity it started with because there is no acceleration in the horizontal plane, only vertical.

whoops, correction  Damon, Saturday, June 14, 2008 at 5:39pm
*
by the way, the vertical velocity would be:
V = Vo  9.8 t
V = 0  19.6
or 19.6 meters per second down
The horizontal velocity would be whatever horizontal velocity it started with because there is no acceleration in the horizontal plane, only vertical.
Answer this Question

whoops, correction  Natalie, Saturday, June 14, 2008 at 5:54pm
Thank you.
Answer This Question
Related Questions
 algebra  How do you solve this math problem? h= 8t^2+40t then it says: when t=...
 Math  Hello, I'm trying to find the following sequence that relates to the ...
 Science  Ok so I have to use kinematic equations to solve these. But I make ...
 math,help!!!!  How do i do thois problem?Please help. Problem #1 solve the ...
 trig  I'm trying to see if the teacher didn't give us the right problem or if I...
 Math Help  Directions:Solve and graph equation using words.Then include wether ...
 Algebra  Write an equation for the following situation. Polly Gone has $120 ...
 math  how would you solve for y in this problem: x=(y^2+3y)^(1/3) would it ...
 physics  A toy car with a mass of 120 g moves to the right with a speed of 0.56...
 math  Hi, I have a math problem that I can't understand how to write the ...
More Related Questions