Recent content by chikis

Solving that way we make us to have two unknowns and that will make the problem too dificult to solve.

(1-t) is nothing more than subtracting the time for the first 4km from the total time, which gives the time for the last 5km.

You did not define some variables in the equation: (kx^2)/x = kx/2 How come that equation? I believe k is constant. But what is x?

I know that t represent time. Am now asking 1-t is what?

Please expanciate a little bit. What is the thinking behind the expression (1 - t) ?

Thank you.

So how do we go about it? By the way, what is the difference between average force and peak force?

4/x +(5/x 2) = 1 9x+8 = x2+2x x2 - 7x - 8 = 0 (x 1)(x-8) = 0 x = 8 or x = -1 The correct answer is 8 km/h. My observation here is that we can only make equation for the total time and use it to find the speed. Why is that if we make equation for the total distance (as I did...

Yes it did. It gave 44.27 ms-1 as the answer.

How do I indicate or show square root sign, super script and sub script? How do I use latex in the forum?

Homework Statement A stone of mass 5 g is projected with a rubber catapult. If the catapult is streched through a distance of 7 cm by an average force of 70 N, calculate the instantaneous velocity of the stone when released. Homework Equations work done in elastic material w = 1/2 fe =...

A man runs a distance of 9km at a constant speed for the first 4km and then 2km/h faster for the rest of the distance. The whole run takes him one hour. His average speed for the first 4km is what? Total distance = 9km Total time = 1 h For the 1st for 4km, he moved at a constant...

But I believe that would have the same explanation with the first statement I gave in disguise.

So do we say this is the most acceptable explanation for now?

Exuse me! Let's get something correct here. Does"1 times greater than", means "equal to" or "more than"? When we say "1 times the load", that could mean equal to the load rather. How do you look at that?