Question

Bea rolls a ball off the edge of a swimming pool and strikes the water 2.0 m away 0.30 sec. later. What was the initial speed of the ball?

Answer 1

help @Akpellet_math

Answer 2

help @QWERTYCraft

Answer 3

help me @nincompoop

Answer 4

help me @Darrius

Answer 5

help me @thomaster

Answer 6

Help me pls @wolfe8

Answer 7

help me pls @hba

Answer 8

help me @Akpellet_math @Albany_Goon @ZeHanz @eliassaab @OtonoGold

Answer 9

help me @ememlove

Answer 10

help me pls @Vinaire @Mashy @Mathbreaker @Chineseboy15 @CyberShadow @sisco0123 @StrikeEagle

Answer 11

use equations of motion
v=0
s=2m
t=0.3 sec.

Answer 12

Not enough information to conclude, we need to know the acceleration and inclination of the plane if it is so. Otherwise if youre talking about average speed then its 4 m/s

Answer 13

so first use this
v=u+at
0=u+a(0.3)
a=-10u/3
now use ..v^2=u^2+2as
0=u^2+2(-10u/3)2
simplify and obtain u
u=40/3 m/s
u=13.33 m/s

Answer 14

THANK YOU @Akpellet_math AND @Mathbreaker

Answer 15

wait what? :O
"now use ..v^2=u^2+2as
0=u^2+2(-10u/3)2"
how is that? :O

Answer 16

I dont think you can assume that final velocity is 0 akpellet

Answer 17

The question is a lil absurd.. is it just falling off the edge? or rolling along an incline?

Answer 18

@Mashy equations of motion ...and at last the velocity is becoming zero only .!

Answer 19

@Akpellet_math ..
no :P.. you just can't use equation and plug values like that ..
besides when it hits the water, its velocity won't be zero.. think about it ;-)

Answer 20

Just because it strikes the water doesnt mean it becomes 0 :P

Answer 21

@Socallmesheckyy
hey you got some diagram or something? :P

Answer 22

Its impossible to get conclusive solution without more variables given.

Answer 23

needs to be assumed that ..! otherwise then there's no way to the problem .!
i know ..the solution is only mathematical ..!

Answer 24

so do u have any proceeding to the problem ..
i know ..my answer seems ..practically absurd .!

Answer 25

it can be calculate @mathbreaker if its just falling off.. like this