[ 3 / biz / cgl / ck / diy / fa / ic / jp / lit / sci / vr / vt ] [ index / top / reports ] [ become a patron ] [ status ]
2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math

View post   
File: 257 KB, 800x533, used-tennis-balls.jpg [View same] [iqdb] [saucenao] [google]
2754413 No.2754413 [Reply] [Original]

1. What height would you have to toss a tennis ball from, that it will bounce 2 meters high?

2. What starting speed in the vertical direction would you have to throw a tennis ball from 2 meters, that it will reach the same height after the bounce.

>> No.2754432

Lmao not near enough information given to ACTUALLY solve this problem.

>> No.2754439

>>2754432
But depending on the scenario, if it was a perfectly elastic collision and neglecting drag and any energy transfer (energy is conserved in a closed system of a perfectly elastic collision) then you would have to drop the ball 2 meters above the ground for it to reach a 2 meter bounce height.

>> No.2754440

wat

>> No.2754455

OP -> Loss of energy is 53 %, no other info. from assignment.

>> No.2754456

You would need the mass of the tennis ball, would you not?

>> No.2754457

>>2754439
>perfectly elastic
2 m3ters dumbass

>> No.2754458
File: 31 KB, 299x377, retarded post is retarded.jpg [View same] [iqdb] [saucenao] [google]
2754458

>>2754439

>hurr durr i'm a retard

he said "toss", not "drop". have to factor in tossing strength.

>> No.2754462

>>2754457
meters*
a bit drunk missed the key

>> No.2754470

you need the mass of the tennis ball

>> No.2754480

OP -> Okay, let's say tennis ball weights 57 grams.

As for 1st question, what height would you have to drop the ball, not toss.

Thanks!

>> No.2754490

>>2754413

Is the surface you are bouncing it off completely stationary? and what angle are you tossing it at?

>> No.2754498

>>2754458
then "toss" it to a height of 2 meters.
OP didn't give shit for initial conditions. So I assumed conditions where from the fairly tale frictionless planet of energy conservation and tits.

>> No.2754513

bump

>> No.2754515

>Go on 4chan for homework help
>post extremely vague questions
>practically hide information about the questions

Oh OP, you crazy.

>> No.2754516

>>2754480

E = mgh
E = (0.057)(9.8)(2)
E = 1.1172

1.1172(1.53) = (0.057)(9.8)h
h = 3.06 m

>> No.2754555
File: 38 KB, 500x400, albert-einstein-trolls-suck-at-life-500x400.jpg [View same] [iqdb] [saucenao] [google]
2754555

>>2754516
Thank you, and as for other lame cunts, see pic.

>> No.2754587
File: 61 KB, 389x296, Troll.jpg [View same] [iqdb] [saucenao] [google]
2754587

>>2754516
Depends where you're dropping the ball from. Canada or Nigera? "g" constant will be different.

>> No.2754599
File: 10 KB, 240x250, dhsdth.jpg [View same] [iqdb] [saucenao] [google]
2754599

>>2754555

You're welcome.

>>2754587

>mfw I get to college, and my statics teacher tells us to use 10 because he doesn't like using calculators.

>> No.2755948

>>2754599

I hate that. I really, really hate that.