Recent content by Remulak

I know how to do projectile motion questions but I'm confused on how to find the velocities at the top of the ramp because the car already has a velocity going up the ramp.

do my values look correct? thanks for the link by the way. I got 1,460 m for his distance traveled after the ramp and 106m for the height.

would it be 14.22 seconds for him to come back to the ground? using a quadratic i found it was 9.55 seconds for him to reach 10m again from which he started. Then 0 = 45.77 - gt gives 4.67 seconds to finish the trip. 9.55 + 4.67 = 14.22 seconds.

Help Please! Homework Statement Jimmy is sitting in a 500kg car at the start of a quarter mile track, with a ramp at the end. His car also has two rockets strapped to the side of it. They each produce a 4000N force, and will burn until Jimmy cuts them off at the end of a quarter mile, and...

thanks for the explanation

A problem that I'm working on has a range of 25m and a height or peak of 4.90m. It says find the initial velocity,the angle at which the projectile is fired, and the time its in the air. I looked on hyperphysics and it said if range and peak are given an equation can be derived to solve for the...

how so if you have the y = yo + voyt - 1/2gt^2?, you'll have two unknown voy and t

How do you derive the equation for the launch angle using the range and peak equations? This isn't a homework problem but something i want to know for my own general knowledge for solving physics problems. Is there a site that has physics equations solved for different variables? Hyperphysics is...

t = 16/VOcos65 is that in terms of t?

arghhh, my algebras rusty how do i solve these variables, don't tell me the answer tho but lead me in the right direction

Ok so I solve for the y equation using a quadratic then I plug t into x? Doc Al when do you know when to use the range equation and when its not appropriate. I have a hard time logically figuring out which equation to use.

Homework Statement A baseball thrown at an angle of 65.0 degrees above the horizontal strikes a building 16.0 m away at a point 5.00 m above the point from which it is thrown. Ignore air resistance. Homework Equations Not sure if this equation works for the problem Vo = SQR(RG/SIN2THETA)...

Got 'em thank you

Part A I got t = 4.07 seconds, and the height is 81.8 meters. Part B I got 122 meters for the car. I think I'm doing something wrong with my signs. I know this is definitely not right since the rocket is going 40m/s.

Homework Statement Just started an introductory college physics I course. I'm interested in the course but I'm having a hard time grasping the concepts. I'm not great at math but you guys probably won't have a hard time with this problem. If somebody could help me that'd be great thanks. A cart...