Recent content by aldeemativo

thanx. amm can i ask another thing? how about height??... when can we say that the displacement of a motion is negative if the forces discussed are those relevant to vertical direction... is it when it goes up or is it when it goes down that we can say it has negative height? thanx...

Homework Statement a ball is thrown upward with an initial speed of 80 ft/sec. Homework Equations how high is it at 3 seconds...? The Attempt at a Solution using the formula:h = Vo*t - 1/2 g*t2 where h as the height Vo is the original velocity g as the gravitational pull ...

Speed finder... help Homework Statement a ball is thrown vertically upward with an initial speed of 80 ft / sec. Homework Equations after 3 seconds, what is the speed of the ball? The Attempt at a Solution using the formula:Vf = Vo +gt where Vf is the final velocity Vo is the...

this is just an example problem. our exam would be similar as this...

Homework Statement A ball is thrown upward with an initial speed of 80 ft/sec. Find the following: a. how high does it go? b. after 3 seconds, what is the speed of the ball? c. how high is it at this time? Homework Equations a. how high does it go? b. after 3 seconds, what is...

i'll try... thank u so much.. :)

yet there's no time indicated from the given problem making me think about the velocity to get the time... can you help me with this?? thanks a lot...

THANx Hootenanny... :) i know this is just a simple problem yet i don't know how to solve it... thanks a lot... more powers!

oh... so half of 150 gives if velocity = (Final velocity + Initial velocity) / 2, then, it will give me a 75 average velocity right?

zero?

could you tell me what is the initial and final velocity... if i will be able to know that, then i think i could do it... thank you so much...

BUT I've got no idea how..., i don't know because the given variables are only two which are: the distance, velocity but in physics formula for the computation of this problem requires three or more than variables given.. could you teach me?

what do you mean?

Homework Statement VELOCITY AND ACCELERATION: An airplane lands in a carrier deck at 150 miles per hour and is brought to a stop by an arresting device in 500 feet. Homework Equations What is the acceleration? What is the time required to stop? The Attempt at a Solution