Question

~Physics Review~
@mhchen

Answer 1

Or anyone who's not busy, really

Answer 2

@Shadow

Answer 3

@mhchen

Answer 4

For number three part a, I had

Answer 5

That is correct, right?

Answer 6

Ye

Answer 7

yup

Answer 8

For Part C number three

Answer 9

Yeah that seems right.

Answer 10

I still don't understand the difference between a speed and velocity

Answer 11

Easy. Speed is just how fast your going.
Velocity is how fast AND a direction.

Answer 12

The top graph has velocity 1.
The bottom graph has velocity -1.

But they BOTH have a speed of 1.

Answer 13

Alright hold on.
So speed is just distance over time right? so total distance over total time.
as of what i learned, velocity is change in x over time. is that overall time as well?

Answer 14

Only the average speed is 'total distance' over time.
But yeah speed is distance over time.

Only when you're finding the average velocity, you find the 'average change in x' over time.

Answer 15

https://prnt.sc/lc068d

Answer 16

Can you give me like a mini test?

Answer 17

That was the actual quiz I took lmao but i totally guessed.

Answer 18

NO WAIT HOLD ON STOP

Answer 19

DONT TELL ME THE ANSWER

Answer 20

o okey

Answer 21

YOU GOTTA QUIZ ME

Answer 22

wait like what do you mean

Answer 23

Make up a test?

Answer 24

Idk man like bring up the whole diagram and requiz me on the same questions on that quiz :/

Answer 25

o

Answer 26

my b, this might get confusing mixing my stupidity and physics

Answer 27

You're awesome
quiz me on number 1

Answer 28

Determine speed from t=1 to t=3

Answer 29

0.8/2=0.4

Answer 30

(or the slope)

Answer 31

Correct

Answer 32

Determine Velocity from t = 5 to t = 7

Answer 33

you're going to be here for a long time (: we havent even started acceleration!!!

Answer 34

-0.25 because since the line is negative the value is negative

Answer 35

ye

Answer 36

Determine Average Velocity over the entire graph.

Answer 37

dang it

Answer 38

0.04286 meters per second
and also velocity is m/s and so is speed, correct?

Answer 39

yeah

Answer 40

Average speed now.

Answer 41

I don't know how to do this problem LMAO

Answer 42

Well what's the total distance traveled?

Answer 43

It went from 0.2 to 1.0 which is 0.8m
Then 1.0 to 0.5 which is 0.5m
Right?

Answer 44

yes, so we only count the slanted lines, not the constant?
and even though the speed is negative, you still add it then?

Answer 45

The speed can't be negative. There's no direction. Only velocity can be negative.

And yeah only count slanted lines. The constant lines means that it's not moving.

Answer 46

OH YEAH DIRECTION IS ONLY FOR VELOCITY

Answer 47

so sorry you have to be put up with a dumb person

Answer 48

okay so it's 0.5+0.8/7

Answer 49

which is like 0.186

Answer 50

ye

Answer 51

and the velocity graph would be

Answer 52

Then we have acceleration, which you're going to have to explain in very very very very very very very VERY detailed reasons

Answer 53

okay

Answer 54

Sorry lemme find my acceleration stuff :/

Answer 55

Can we do the whole workshet

Answer 56

Well alright then

Answer 57

So do you know how to do #1?

Answer 58

hold on so when a marble goes downa ramp, the speed is much faster at the ending point than the starting point correcy

Answer 59

Yeah

Answer 60

Alright so I got a

Answer 61

for the position and time graph, is that right?

Answer 62

Ye

Answer 63

why is the velocity time graph a straight line?

Answer 64

I ate dinner cause you replied so late.


As the ball rolls down, it gets faster and faster. So the velocity gets bigger.