Question

Hii can someone help me?

Answer 1

hei..,

a = -3.2953 m/s^2..,

right??

Answer 2

noo acceleration is -2455 :/

Answer 3

thats why i said it would be easier for you if you looked at the other link! sorry :/

Answer 4

okay...., i try again...,

Answer 5

im sorry :/

Answer 6

sorry for what??? what is the real answer, on ur book??

Answer 7

for bothering you! and the real answer for the whole question? .048 m

Answer 8

@natasha.aries ...,

Answer 9

yess

Answer 10

my answer for a is -2399...,

Answer 11

how?

Answer 12

@gerryliyana

Answer 13

the speed is related to energy
.5*m*v^2=m*g*h

the acceleration of the pad is
0=v-a*t
solve for a
and plug into
s=v0*t-.5*a*t^2

Solution:

v=sqrt(2*9.81*12)

a=sqrt(2*9.81*12)*1000/6.25
a=2455 m/s^2

s=sqrt(2*9.81*12)*6.25/1000-
.5*2455*6.25^2/1000^2

4.8 cm

Answer 14

ok

first of all

for g =10
v = sqrt(2gh) = sqrt(2x10x12) = sqrt(240) = 15.49 m/s

based on Law of conservatio of energy..,

W = 1/2 m (v2^2 - v1^2)
m a s = 0.5 m (0 - v^2)
a s = -0.5 (15.49^2)
a = - 0.5 x239.9401/0.05 = -2399

Answer 15

ok @natasha.aries

Answer 16

am i right @jiteshmeghwal9

Answer 17

yes ur eight @mayankdevnani :)

Answer 18

thnx...... @gerryliyana

Answer 19

yes @mayankdevnani :)

Answer 20

thnx....

Answer 21

but the answer is .048 cm?

Answer 22

i don't think

Answer 23

maybe we just need to change it all into grams!

Answer 24

may be

Answer 25

THANK YOU SO MUCH :)

Answer 26

welcome

Answer 27

BOTH OF YALL DESERVE THE MEDAL!

Answer 28

oh!!!

Answer 29

@natasha.aries didn't we solve this one the other day?!

Answer 30

yeah but when i was trying to do one part i kept messing up so i wanted to know what i was doing wrong!

Answer 31

oh ok. Did you notice that mayankdevnani did it slightly differently at the end? There is sometimes more than more way of getting an answer, as long as you use correct physics! hope you are still feeling like yuo are making progress