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596277 thumbnail
Posted: 14 years ago
@ akhl, thanks for your help =)

Physics---

An airplane starts from rest and accelerates at a constant +3.00m/s^2 for 30.0s before leaving the ground. What is its displacement during this time?

I used the formula d = vit + 1/2 at^2, and I got 1350 as an answer.

596277 thumbnail
Posted: 14 years ago

starting from rest, a race car moves 110m in the first 5.0s of uniform acceleration. What is the car's acceleration?

^^ Ive been trying do this, but im all the more confused. The formula is supposed to be d = vit+1/2at^2 and I tried plugging everything in, and then from there, I just get stuck, I have no idea what to do to get the acceleration.

akhl thumbnail
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Posted: 14 years ago
@Ayeshaa

An airplane starts from rest and accelerates at a constant +3.00m/s^2 for 30.0s before leaving the ground. What is its displacement during this time?

I used the formula d = vit + 1/2 at^2, and I got 1350 as an answer.

Answer is correct. 😊
akhl thumbnail
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Posted: 14 years ago
@Ayeshaa,

starting from rest, a race car moves 110m in the first 5.0s of uniform acceleration. What is the car's acceleration?

d = vi * t + 1/2 * a * t^2
110 = 0 * 5.0 + 1/2 * a * 5.0^2
110 = 0 + 1/2 * a * 25
110 = 0 + 12.5 * a
110 = 12.5 * a
12.5 * a = 110
a = 110/12.5
a = 8.8 m/s^2

596277 thumbnail
Posted: 14 years ago
^^ Thanks so much for your help.
596277 thumbnail
Posted: 14 years ago

Socials—Canadian History

Has anyone played the game "Over the top"—interactive adventure. It tells you about Canadian soldiers and the way they fought.

I have to write a small paragraph explaining what tactics and strategies were used in the Great War. I've jotted down a few things, but need more.

596277 thumbnail
Posted: 14 years ago
Hey, anyone good at writing essays? I have to do an essay for Socials, and I'll do it, but I just need someone to go over it, and make it a bit more professional/better.
akhl thumbnail
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Posted: 14 years ago
@Ayeshaa,
Once you have written the essay, you can send it to me. I will go over it.

596277 thumbnail
Posted: 14 years ago
@ akhl Okay thanks soo much =) Will PM it to you, as soon as Im done writing it.
596277 thumbnail
Posted: 14 years ago
Physics:

I just did a formal Lab---Acceleration due to Gravity. And the purpose was to determine "g" ( the acceleration due to gravity) from a strobe photograph. The strobe photograph was of a falling ball. And the procedure was to measure the distances in between the falling ball, and yeah there was a bunch of converting and stuff.

And my questions are:

What does the shape of the graph tell you about acceleration due to gravity?

I don't know how to properly rephrase this, it's a straight line on the graph, which goes straight up, I guess that would mean it's constant. There's minimum error.

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