Welcome, Guest: Register On Nairaland / LOGIN! / Trending / Recent / New
Stats: 3,165,805 members, 7,862,664 topics. Date: Sunday, 16 June 2024 at 10:23 PM

Please Help Us Solve This Physics Questions - Education - Nairaland

Nairaland Forum / Nairaland / General / Education / Please Help Us Solve This Physics Questions (151 Views)

Pls Help Solve This PHYSICS / Can You Solve This Physics Question? / A Genius Should Help Me With This Physics Calculation. (2) (3) (4)

(1) (Reply) (Go Down)

Please Help Us Solve This Physics Questions by banky200: 11:30am On Mar 09
Please help us solve this physics questions
Number 8 and 11

Re: Please Help Us Solve This Physics Questions by MichaelSokoto(m): 1:10pm On Mar 09
very simple!

I for quickly do am 4 u buh am busy at d moment.

kpele!
cool
Re: Please Help Us Solve This Physics Questions by MrBrownJay1(m): 8:20pm On Mar 09
how are you ever gonna learn if you do your homework for you?!

here is for your education of the day (AI is your friend):

11) To calculate the amount of work needed to stop a bullet, you can use the work-energy principle which states that the work done on an object is equal to its change in kinetic energy. The kinetic energy of the bullet is given by ½ mv², where m is the mass of the bullet and v is its velocity. As the bullet is brought to a stop, its kinetic energy goes to zero, thus the work done is equal to the initial kinetic energy of the bullet.
Re: Please Help Us Solve This Physics Questions by TOM208: 11:09pm On Mar 09
------------
8. P.E = mg(h1-h2)
=8*9.8(100-40)
=4704J
I use g=9.8
(9)
Use
mgh=1/2*m*v2

Note v square
Substitute for all the given values
h =5.1m
(10)
Elastic stored energy to Kinetic energy
(11)
Work done=Fs
Fs=1/2*m*v2

Note: V square

Change m=20g to m=0.02kg
Since 1000g equivalent 1kg
When you substitute correctly
Your answer should be 225joules


All the best

(1) (Reply)

Affordable Study Abroad Program / University Of Lagos (unilag) Admission Exercise 2019/2020 : Beware Of Activities / Is It OK To Eat Dessert Every Night?

(Go Up)

Sections: politics (1) business autos (1) jobs (1) career education (1) romance computers phones travel sports fashion health
religion celebs tv-movies music-radio literature webmasters programming techmarket

Links: (1) (2) (3) (4) (5) (6) (7) (8) (9) (10)

Nairaland - Copyright © 2005 - 2024 Oluwaseun Osewa. All rights reserved. See How To Advertise. 7
Disclaimer: Every Nairaland member is solely responsible for anything that he/she posts or uploads on Nairaland.