Recent content by 7Kings

The negative indicates that the direction of the image is oppositte of that of the object

I recently took a test on lenses. One of the questions was "The image formed by a converging lens is real and is n times the size of the object. If the focal length of the lens is f, the distance from the lens to the image is? Now, the answer is f(n+1) but I can't seem to figure out why...

So then are you saying that 3.406 m/s^2 due north = -3.406m/s^2 due south, since its going south?

Sorry, sorry guys. I've just got one more thing, and i finished that question. Just the next one, its basically the same thing but I am not sure about one part of it: Coasting due south on your bicycle at 8.0 m/s, you encounter a sandy patch of road 6.0 m across. When you leave the sandy patch...

Ok. I don't want to keep on posting my random ideas but this time I am almost positive i did it right. A=(Vf^2-Vi^2)/2d A=(0-550^2)/(2*-.27) (Is the -.27 negative becuase its a dent so it went like..inwards kinda?) Then you have A=500740.7407 m/sec^2 as your final answer?

Actually, I've just made some progress. I've found out i need to use the equation Vf^2=Vi^2+(2ad) but I am not sure what i do next. Was i wrong before and is the INITIAL speed 520 m/s, the FINAL speed 0 m/s? That would have 0^2=520^2+2ad but...i don't know what the displacement is. Oh wait...

Thats what I am missing. I don't see where it tells me the distance the object travels, or how i can figure that out. Also, I don't see its inital speed. I just know its final speed is 520 m/s

What does F, and d stand for? I know KE is the kinetic energy. I did the conversion of pounds to Kilograms. It would be 12.246994 kg. And the only equations i learned where the four kinetics equations, but i don't see how they could possibly help me yet as none of them have anything to do with...

Ive been trying to fiure out how to get this answer but am just have some serious trouble. A 27 pound meteorite struck a car, leaving a dent 27 cm deep in the trunk. If the meteorite struck the car with a speed of 520 m/s, what was the magnitude of its deceleration, assuming it to be...