Recent content by Alyssa Jesse

But the question asks, does it make the jump if d= 55m..I feel confused.

Yeah, you're right, it is simpler to think of it as initial height=zero! Is this right? d= vv+1/2at^2 d= 0+1/2(10)(1.5^2) d= 11.25m So it does make the jump?

Ah sorry I wrote the last part wrong. If it drops lower than 11.25m below its highest point of 11.25m, then it would not make the jump?

Well taking into consideration the previous problem where the car reaches 11.25m above the ramp, ie the initial starting point, and if the ramp is the same on the other side - that the car does not drop below 11.25m? That if the car drops below 11.25m then it would miss the ramp?

That the car will reach the other side without falling into the abyss?

Conservation of energy? Energy cannot be created or destroyed, it may be transformed from one form into another, but the total amount of energy never changes? So in a closed system gravitation potential energy must equal kinetic energy and vice versa?

So would it be - GPE= mgh h= GPE/mg h= 4680/(65*10) = 7.2m?

Hmm I understand the concept behind what you are saying, but I don't know how to show that using physics.

The formula that I have for GPE is GPE= weight*height But because I don't have the height, I can't see how to use this, and how to use energy conservation to relate the two points.

The problem is I'm not told what the initial and final heights of the jump are, so how can I express this?

At the height of the ramp would he have gravitational potential energy?

Here is the image. I worked out KE= 1/2me^2 KE= 1/2(650*12m/s2) KE= 46800j Have I done this wrong? How does that equal the height of the ramp?

I am currently taking a 1st year introductory physics paper at university. I don't have a strong background in maths or science. Homework Statement A skateboarder with a total mass of 65kg is skating on a half-pipe ramp, as shown above. When he is at the bottom of the ramp he is traveling...

The last part of this question is - Calculate whether the car will make the the jump if (the distance to the other side) d=55m? I don't know how to do this question without knowing the height of the cliff the car is on, and the height that it has to reach on the other side. Does it have...

Thank you! So the two forces acting on the dog are gravity and the support force provided by the scale?