Question

What is the Acceleration of a car moving along a straight-line path that increases its speed from Zero to 100 KM/H in 10 seconds?

Answer 1

Thankyou for trying to atleast to help you're Awesome! (=

Answer 2

Isn't it 10 KM per hour and 10 KM per Second?

Answer 3

Acceleration is equal to change in velocity over change in time. Generally speaking unless specified your answer should be in m/s. So for starters, convert your speed from KM/H to m/s, which would give you a velocity of 27.78 m/s. Because Acceleration is change in velocity over change in time, you'd divide 27.78 m/s by 10 seconds, getting an answer of 2.78 m/s^2.

Answer 4

Also sorry for the lack of nice notation, I've literally been on this site for all of 6 minutes.

Answer 5

lol its okay (: what do you mean by all of 6 minutes? :P

Answer 6

I literally opened my account 6 minutes ago to get help with an optics problem that has been driving me wild.

Answer 7

haha Whats the Question?

Answer 8

sorry i didn't mean to say haha as in sucks 4 u i'll help if I can (:

Answer 9

A thin double convex glass lens (Ng = 1.56) while surrounded by air has a 10 cm focal length. If it is placed under water (Nw = 1.33) 100 cm beyond a small fish where will the fish's image be formed? I understand the second question, that's easy. What I'm confused on is how to set up the ratio of the focal length in air and the focal length in water with the lens makers formula.

Answer 10

r u sure ?? I'm not good at school at all in like any subject even if i do my best in a subject

Answer 11

I'd say ur doing good (:

Answer 12

Haha, why thank you

Answer 13

np :P

Answer 14

well I have a ton more questions to do lets get to them lol

Answer 15

How do i add you as a friend on here?

Answer 16

I guess that works haha

Answer 17

Xd